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Oral-B Smart 4 4000 Review

Medically Reviewed By: Dr. Gemma Wheeler

(GDC Number: 259369)

Oral-B Smart 4 4000

Our Verdict

There is no denying that the Smart 4 4000 cleans the teeth and mouth well.  It offers a pretty decent battery life, whilst also looking good and feeling solid and slim in hand.

There are 2 variants of the Smart 4, one with and one without a case. The version with the case is my preference (subject to price).

At the time of writing, it is the cheapest brush in the Oral-B range to offer Bluetooth connectivity and for that, it deserves some credit.

All things considered this is a good value, smart electric toothbrush.


  • Good value smart toothbrush
  • Slim handled brush with good grip
  • 2 week battery life
  • Pressure sensor – be alerted when brushing too hard
  • Bluetooth connectivity for pairing with smartphone app


  • 2 variants – 1 with and without a case
  • Not easy to tell which cleaning mode is selected
  • No dedicated cleaning mode control button
Preview Product Rating Price
Oral-B Smart 4 4000 Oral-B Smart 4 4000 54 Reviews $ 99.00

The 3 BIG questions about the Oral-B Smart 4 4000

If you are short of time, the answers to the following 3 questions should let you know all you need to about the Smart 4 4000.  If I have missed something, let me know in the comments.

If you want more detail, you can read the full review further down the page or watch my video review.

1. Is there anything drastically wrong with this toothbrush?

No, it is a solid performing electric toothbrush and is one of the better value ‘smart’ electric toothbrushes on offer.

It is a shame there are 2 versions, one with and one without a travel case. The variant with the travel case is the one to go for.

2. Which other brushes should I consider?

It ultimately depends if you want a ‘smart’ toothbrush.

If you do not, then the Oral-B Pro 2 2000 is my recommendation.

It cleans just as well. It has the same shape and sized handle with identical battery life. You don’t get a brush head storage compartment or as many brush heads, but it is then cheaper.

Alternatively, is you do want a bluetooth enabled smart toothbrush, you should consider the Oral-B Genius 9000 or the newer Genius AI. They come at a premium but offer enhanced smart features and additional box contents could be worth it for you.

For a more detailed comparison of buying options, see our post on the Australia’s best electric toothbrushes.

Our Choice
Oral-B Pro 2 2000 Black Electric Toothbrush and Travel Case
Oral-B SMART 4 4000 Rechargeable Electric Toothbrush, Powered by Braun
Oral-B Genius 9000 White Electric Toothbrush
Brush Name
Oral-B Pro 2 2000
Oral-B Smart 4 4000
Oral-B Genius 9000
Customer Rating
Electric Teeth Rating
$ 79.00
$ 99.00
$ 174.00
Shaver Shop
Oral-B Smart 4 4000 Review 1
Oral-B Smart 4 4000 Review 1
Oral-B Smart 4 4000 Review 1
Our Choice
Oral-B Pro 2 2000 Black Electric Toothbrush and Travel Case
Brush Name
Oral-B Pro 2 2000
Customer Rating
Electric Teeth Rating
$ 79.00
Shaver Shop
Oral-B Smart 4 4000 Review 1
Oral-B SMART 4 4000 Rechargeable Electric Toothbrush, Powered by Braun
Brush Name
Oral-B Smart 4 4000
Customer Rating
Electric Teeth Rating
$ 99.00
Shaver Shop
Oral-B Smart 4 4000 Review 1
Oral-B Genius 9000 White Electric Toothbrush
Brush Name
Oral-B Genius 9000
Customer Rating
Electric Teeth Rating
$ 174.00
Shaver Shop
Oral-B Smart 4 4000 Review 1

3. Where is the best place to buy the Smart 4 4000?

The best place to buy the Smart 4 4000 is the Shaver Store.

Shaver Store offers the variant of the Smart 4 that comes with the travel case and in most cases represents the best value.

All other outlets, including Amazon, Harvey Norman, Myer, David Jones and the Good Guys, sell the variant with no travel case in the box.

Check the list below to see which retailers are currently stocking the Smart 4 4000, and the price they are offering.

Why should you listen to us?

Electric Teeth is an independent website with a mission to simplify dental health.

Our team is a mixture of consumers and dental professionals.

We strive to create honest, informative content, telling you the facts, good or bad.

We are not sponsored by big brands or healthcare companies. Our site is funded by affiliate revenue and ads, but we only recommend products that we have tested and truly believe to be worth your money.

Why not watch this short video to find out all about us?

Video Review

The following video is the UK version of the Smart 4 4000. Aside from the price and power supply there is no real difference. The general message is the same.

Oral-B Smart 4 4000 Electric Toothbrush Review

And now for a bit more detail….

The Smart 4 4000 is an update on the popular Pro 4000 that came before it.

It has an improved battery life and aims to be more competitive in today’s market.

Variants of this toothbrush

There are 2 variants of the Smart 4.

The difference between them is limited to just 1 item. A travel case.

All retailers sell the standard Smart 4 4000 that does not include a case for the brush.

However, Shaver Shop has the exclusive on the version with the toothbrush travel case included.

The case is fairly basic, holding the handle and up to 2 brush heads. However, it is a useful addition if you travel occasionally as it protects the handle and heads.

The model numbers are the same and the packaging looks the same, but what you get in the box is different.

Typically, the price of the Shaver Shop exclusive is too the same as the Smart 4 without the case. Hence my recommendation is to go with the variant with the case.

What’s in the box?

  • 1 x Braun Oral-B Smart 4 4000 rechargeable toothbrush
  • 1 x CrossAction brush head
  • 1 x 3D White brush head
  • 1 x Floss Action brush head
  • 1 x Charging stand
  • 1 x Brush head storage compartment
  • Documentation
Oral-B Smart 4 4000 box contents

Key Features

  • Oral-B 3D movement cleaning system (Oscillating-Rotating-Pulsating)
  • Removes 100% more plaque than a manual brush
  • Rechargeable battery
  • 3 cleaning modes (Daily Clean, Whitening and Sensitive)
  • Visible pressure sensor
  • Clean timer including quadpacer
  • Battery life in excess of 2 weeks
  • Bluetooth connectivity and smart coaching

Pro & Cons

Here are what I consider to be the pros and cons of the Smart 4 4000.

The Positives

  • Good value – One of the most cost effective ‘smart’ toothbrushes and the cheapest from Oral-B. Includes a brush head storage compartment too.
  • Battery life – A much needed boost given the premium price tag of this brush, now boasts up to 16 days of usage.
  • Design – A slim profiled brush that looks and feels good in the hand.
  • Cleaning modes – Additional choice of modes over the standard Daily Clean.
  • Bluetooth connectivity – Monitor, track and improve your cleaning.
  • Pressure sensor – A rear mounted pressure sensor illuminates red should too much force and pressure be applied to the teeth. Acting as a visual indicator you are clearly made aware to reduce the pressure and chances of doing damage to the teeth.

The Negatives

  • Box Contents – 2 variants, one with and one without a travel case. A smartphone holder would be a nice inclusion too.
  • Controlling the cleaning modes – Can’t change the cleaning mode until the brush is powered on (a complaint across most Oral-B electric toothbrushes).  Hard to remember the sequence of modes.
  • Battery Status – The battery lacks detailed feedback on the remaining power available
  • Bluetooth connectivity – Nice feature, not something everyone will be able to get used to or in the habit of using.

Design, usability, clean & general use

Between brands and even different ranges from the same brand, the design and feel of a brush in hand can differ, however, most have a fairly slim, rounded profile to them.

Oral-B has always done, in my mind, a pretty decent job when it comes to the look and feel of the brushes.

Could they do away with some of the plastic construction? Yes, they probably they could.  However, I think the look of the Pro and Smart models are actually a nice blend of design and everyday practicality.

Oral-B Smart 4 4000 Review 7

The Oral-B 4000 is an all white design.  A gloss white plastic body is finished with a soft touch rubber grip that runs down the front of the brush handle.  On many other models this a bolder colour to give it a bit more character and more eye catching, the Smart 4 4000 looks quite clinical.

Despite this, it is grippy and has a series of ridges around the power button that help hold and guide you to the controls of the brush.  On the back of the handle is a harsher but still practical series of grips.  Raised plastic notches give the fingers sticking points on the upper half of the handle.

For me, these are small practicalities that make a big difference in everyday life.

Virtually at the top of the brush handle in between the contoured grips is the power button that is white in colour with a grey/black power icon on it.  The contrasting colour of the icon helps it stand out against all the white body.

Oral-B Smart 4 4000 Review 8

You don’t want a button that is too easily activated or too firm, thankfully that is not the case on the 4000.  It has a nice resistance when pressed.  Not too soft that it can be accidentally activated, but not too firm it is difficult to press.  Good even for those with limited dexterity in my opinion.

The lower third of the brush handle has the Bluetooth, Oral-B and Braun logo in grey/black as well as a battery and charging icon below them.

These icons are transparent and have an LED light behind them that illuminate at certain times.

There are 2 parts to the brush, the handle I have been describing.  This has all the clever bits of technology in.

Sealed inside, these parts are protected from water and moisture.  This means that the brush is water resistant and can be rinsed under a tap and used in a shower.

The likelihood is that it would survive, but I strongly advise you avoid submerging the brush below water, for example in a bath or sink.  A rinse is fine, but the brush does not need to sink to the bottom of a bowl of water.

The second is the detachable brush head, I will explain a lot more about this shortly.

If you take a look at the very bottom of the brush handle, there is a recess, into which the pin on the charging stand connects to.  A charging stand is provided.

The brush is able to stand upright without the stand.

Right at the top of the brush handle is a metal prong, this is what the brush head connects to and feeds the power from the brush motor.

Just below this metal prong on the rear side of the handle is the pressure sensor.

Oral-B Smart 4 4000 Review 9

Are you familiar with a pressure sensor?

If not, in this case, it is a plastic panel that is a red/orange colour, it sweeps up over and down the neck of the handle.

When you brush, sensors within the brush detect if you are applying too much force to your teeth.  When it detects this, it activates the pressure sensor.

This means that the LED sat behind the panel lights up.  You get a bright red light that you won’t fail to notice.

At the same time as the LED pressure sensor illuminates, you should also notice that the speed of the brush head will decrease and the sound of the motor will change.  This is nothing to worry about.  It is programmed to do this, until such time as the pressure is relieved.

You see, applying too much pressure when brushing is a big issue and it causes more damage than you might think.  Excessive pressure can damage the gums and cause wear on your teeth.  A brush need only skim the surface of the tooth and gums. So, the brush reduces the power to protect your teeth.

Just relieve the pressure and the light will go out and the motor power up again.  Just remember to let the bristles essentially glide across the tooth surfaces.

If you activate it often, don’t worry all that much, over time you will learn and avoid doing lasting damage to your teeth.  Just imagine if you didn’t have it…

The Oral-B Pro 2 2000 has 2 cleaning modes, the Pro 3000 has 3 cleaning modes, the Smart 5 5000 has 5 cleaning modes, so as you would imagine the Smart 4 has 3 cleaning modes….Yes, I know, I can’t quite figure that out either.

The 3 cleaning modes are:

  • Daily Clean
  • Sensitive
  • Whitening

Remember the order of these, you will need to refer to this in a moment.

Unlike the Pro 3 3000 the Smart 4 is a bit smarter, as the name implies.  More on this shortly.

Oral-B Smart 4 4000 Review 10

Each of the 3 cleaning modes work slightly differently, with differing levels of oscillations, rotations and pulsations to achieve different cleaning effects on the teeth.

For example, Sensitive mode reduces the number of movements to be softer on the teeth and gums.

You can find much more detail on each mode and how they compare in our article, Oral-B cleaning modes explained.

What I find somewhat odd is that Oral-B have not included a Gum Care or Sensitive brush head with the 4000. Would that not make sense to pair with the sensitive cleaning mode?!

To activate each cleaning mode, you have to use the power button on the front of the brush.

Remember the list above, this is the order of the cleaning modes.

Press the power button once to turn it on.  Daily Clean mode will launch.

Press it again to change the mode to Sensitive.

Press it a third time to activate Whitening mode.

A fourth time will turn the brush off.

You can press and hold the button for 2 seconds at any point to power it off.

This makes sense, but there are 2 issues in particular that I have with the way in which this has been configured.

Oral-B Smart 4 4000 Review 11

The first is that to change to any of the cleaning modes, you first have to power the brush on and the second is you need to remember the order.

I suspect over time you will learn this, but wouldn’t some icons or LED’s be helpful to show the mode.  The more premium Smart 6 and Genius range offer them.

Ideally, a way of selecting the mode prior to actually turning the brush on would be the solution.  This is not available, not even on the premium Genius 9000 model.

Most Sonicare brushes allow you to do this though.

Another small but significant thing to remember is; put the brush in your mouth before powering on and changing modes otherwise the toothpaste might go flying across the room.

Buy the Genius 9000 and although you have to power the brush on to change the cleaning mode, if you have changed the mode, it will remember it.  Next time you power the brush on, it will begin in that mode.  The Oral-B Smart 4000 electric toothbrush does not do this.

I understand why though.  If it did, there is no way of showing what mode it is on, unless you use the app.

When using the Bluetooth connectivity, the app will show the cleaning mode.  I will explain the connectivity option in more detail shortly.

Despite the criticisms of the way in which the cleaning modes are presented, I do love the clean that an Oral-B brush offers. Studies have suggested Oral-B’s oscillating and rotating technology is superior, but there are studies that side with Sonicare.

It is a little harsher/aggressive feeling than a Sonicare or Colgate brush.  Whilst this is not exactly the best way of rating a clean of the teeth, it really feels like it has done something. I prefer it.

Oral-B Smart 4 4000 Review 12

The handle offers some 16 days of battery life and is lightweight.

When the battery built into the brush begins to deplete, the charging icon will flash Red.

You do not get anything more detailed from the handle.

It would be nice if you had a green light to suggest a good amount of remaining charge or yellow for less than 50% for example, but no such luck.

Even better would be a little LED display that showed the exact battery percentage (%).  Or in the case of the Smart 4, the app picked up the information.

The battery icon will flash green when the brush is on charge.

Oral-B Smart 4 4000 Review 13

In the box with the Smart 4 you get 3 styles of brush head.

  • 1 x CrossAction
  • 1 x FlossAction
  • 1 x 3D White

There is a range of more than 6 different styles of brush heads you could use on the Smart 4.

The heads are interchangeable, so you can select your preferred head and use it with any of the cleaning modes, although some work best with particular modes.

To fit or remove the brush head simply align the metal with the hole in the shaft of the brush head and push the two together until you hear and feel them clip into place.

Pull the two apart to release them.

It is important for your oral health to replace your toothbrush head every 3 months or sooner if your bristles are frayed.

Official Oral-B brush heads are recommended and they all have something known as indicator bristles.  These are Blue coloured bristles that will over a 3 month period gradually discolour.

When they are a very pale blue or white it is time to change.  It is a clever reminder system.

Would you like to know more about the brush heads, the styles, how they work and the aftermarket options?  I recommend you take a look at my Ultimate Guide to Oral-B brush heads.

Oral-B Smart 4 4000 Review 14

Most cleaning modes on this brush run for 2 minutes.

If you did not already know, this is generally the recommended brushing time. 2 minutes, twice a day.

If you didn’t know this or are guilty of not brushing for as long as you should, the Smart 4 can help in 2 ways.

The first is the built-in timer and quadpacer.

Imagine your mouth broken up into 4 sections. Upper right, upper left, lower right and lower left.

You should spend 30 seconds cleaning each section.  The pacer helps you keep an even brushing time on these 4 sections.

At 30 second intervals, the brush will provide an audible warning via a slight pause in the brush motor at to tell you to change quadrant. Once the 2 minutes are up 3 brief pauses in the brush motor will be heard and felt.

Brushing for the full 2 minutes is very important, but just as important if not more so is the right technique. Make sure you learn how to clean your teeth properly.  

The second was in which it helps is through the more powerful Bluetooth connectivity and smartphone app.

Oral-B Smart 4 4000 Review 15

The idea behind this connectivity is to encourage you to brush for the right amount of time and evenly.

To take advantage of this smart feature you need an Android or iOS smartphone and Bluetooth 4.0 on your phone.

Download the appropriate app and install it on your phone.

You can download from iTunes here and Google Play Store here.

As good as the app is, I feel this may also be one of the negatives as some will not see the point of using it or find it more hassle than it’s worth.  You don’t have to if you don’t want to.

If you feel you won’t use it, you may want to consider if the Pro 2 2000 is for you, you will be paying for a feature you won’t necessarily use otherwise.

It takes a bit of practice to get in a routine of having your phone with you when brushing.  If you forget it or don’t have it to hand, don’t worry.  The handle will store the data for the last 20 cleans and sync this to the app, the next time it connects.

It is also worth knowing that the Bluetooth connectivity works only for one user.  If you share the brush handle with a partner, this will mess up the data.  If you and other family members all want to track with the app, you need your own brush handle.

The app is very comprehensive with lots of options. It gives you all you need though to not only effectively brush your teeth, but to log the cleans and motivate you.

Oral-B Smart 4 4000 Review 16

There are features like integration with your calendar so you can see your days’ agenda, news, tips and tricks, so you stay interested when cleaning your teeth.

At times I have found these distracting, you may want to customise the settings to avoid some notifications.

You can also set personalised modes which can disable cleaning modes on the brush handle too.

Sadly the app does not show the battery power of the brush handle.

The main feature of the app is the on screen timer and guide that shows you where to brush and how well you have brushed.

Whilst not essential, it would be nice if Oral-B included some form of smartphone stand with the 4000.

If you want to make best use of the smart features, you need to have the phone to hand. Holding it for 2 minutes whilst you brush can be frustrating.

It need not be a suction cup holder like the Genius 9000 comes with, but a countertop option would be a nice alternative. It would only cost a few dollars extra.

The idea being, launch the Oral-B app, sit the phone in the stand and you can now see the timer and how well you are cleaning, plus all the useful advice.

Whilst not all choose to or like you use their phone in the bathroom (water & electrics) the dock would give somewhat of a more suitable home to the phone and encouraged the use of the smart element of the brush.

With this said, maybe this is what encourages you to look at the more premium models that do include something similar.

Oral-B Smart 4 4000 Review 25

Aside from the aforementioned 3 brush heads, the Smart 4 comes with a brush head storage compartment included in the box.  

This is a moulded piece of plastic that clips around the charging stand that is also provided.

It is essentially a tray with 4 recesses into which a brush head can be laid. A translucent lid then closes down over them protecting the heads from dust and debris. But, importantly allowing ventilation so the heads can dry out.

It is a handy accessory if you like to use multiple heads or share the handle with other people.

The charging stand is fairly self explanatory, but I explain more about this in the battery section of the review.

As I have mentioned in the variants section, the 4000 does not come supplied with a travel case as standard, but if you buy it from Shaver Shop, their version has this included, usually for no premium in price.

I think this is worth picking up, because should you travel, go on vacation etc, it helps protect the handle and head.

You get an impressive 180 days to try the Smart 4 with Oral-B’s money back guarantee. It is essentially like a trial, whereby you can buy and try the brush.  Should you not like it you can return it for a refund.  This is particularly useful if you are unsure whether an electric toothbrush is for you.

In the unlikely event, something goes wrong, there is as standard a 24 month warranty is provided with the 4000.  

Summary of design, usability, clean & general use

  • Slim and comfortable brush to hold and use
  • Looks good
  • 3 cleaning modes (Daily Clean, Whitening and Sensitive)
  • 2 brush heads included (2 x CrossAction (4000N) or 2 x Sensitive/SensiClean (4000S))
  • Alternative brush heads available
  • Brush head stand for 2 heads included
  • Overall inferior package to the older SmartSeries 4000
  • Need to switch the brush on to change cleaning modes
  • No way to easily tell which mode is being used
  • Built-in quad pacer and 2 minute timer tells you when to change quadrant and finish brushing
  • 16 day battery life, but no percentage indicator for clear feedback of remaining power
  • Bluetooth connectivity with an app for logging and coaching
  • Not all will find the app useful
  • Can support tracking for only 1 user per brush handle
  • No smartphone stand or travel case included
  • Water resistant and can be used in the shower
  • 2 year warranty as standard, register online for a free additional year
  • Money back guarantee option for 180 days

Battery life

The introduction of the Smart 4 brought an upgrade on battery life compared to previous models.

Up until now, Oral-B has been producing brushes that have offered far inferior battery life when compared to the competition.

However, they have managed to remain strong and essentially get away with it, because the price has often been more favourable.

Oral-B Smart 4 4000 Review 26

There is the reality that most of us don’t need over a weeks battery life, but there is something to be said for having the ability to take a brush away on vacation and not having to worry about charging it!

To date, with the exception of the Genius brushes, all others used a battery type known as Nickel Metal Hydride (NiMH).  Although okay, this battery technology has really been superseded by Lithium-Ion (Li-Ion) batteries. These are the types of batteries we find in our smartphones.

As a result of this change, the Smart 4 and other models now have a battery life more fitting of the current climate.

The older SmartSeries 4000 offers 7 days use or 28 minutes of actual usage time.

With the Oral-B Smart 4, this has more than doubled.

In my testing, we were able to get 66 minutes of usage time from the brush, which equates to 16 days use.

The 16 days we measured is based on one user brushing twice a day for 2 minutes.

Various conditions may affect this quoted usage time, but safe to say you are getting at least double the performance, yet despite the battery change the physical size of the brush handle has not altered.

Some Sonicare and Colgate models do actually achieve up to 3 weeks, but Oral-B are now much much closer in their capabilities.

On the brush handle are 2 icons that light up, a battery icon and a charger icon.

When the battery is low, it is the charging icon that will flash red.

Sit the brush on the provided charging stand and the battery icon will flash green.

Oral-B Smart 4 4000 Review 27

Made of plastic, the charging stand has a prong on the top, on which the Smart 4 will sit to be recharged.  This aligns with the recess in the base of the Smart 4 brush handle.

This charger has a power cable that will connect to a power socket found in a bathroom.  The 2 pin connector works on 220-240v.

It usually takes up to 15 hours to recharge the brush fully.  It is a relatively slow charge that is pushed to the brush via the charging stand, so it is perfectly safe to leave the brush on here at all times when not in use.

Summary of battery life

  • Newer Lithium-Ion battery technology used
  • 66 minutes of usage time or 16 days usage based on 2 cleans a day
  • Can be left on the charger
  • Takes up to 15 hours to charge fully
  • A charger is included in the box
  • The status icon flashes green when charging and red when the battery is low
  • Works on 220-240 volts
  • Competition still offer up to 3 weeks usage

Price & where to buy

I have included links to buying options here at the start of the review.

In the section below, I discuss the price more generally and in relation to similar products.

Most products are given a recommended retail price (RRP) by the manufacturer, the Smart 4 4000 is no exception.

The RRP here is $199.

This is not the most ludicrous given some of the RRP’s for other brushes, but it is still more than you should pay.

To put it into perspective, you can quite often purchase Oral-B brushes for up to 50% off.

This appears to be no different with the Smart 4 4000 and you should therefore expect to pay around $100.

Prices will vary from store to store.  Quite often online retailers will have the best price, but promotions run by high street stores at certain times of the year will see them come inline or cheaper than other retailers.

Ultimately, pay a price you deem fair and are happy to pay, but spending over $120 and you should question the value, given the other brushes available for the price.

This brush like every other requires replacement brush heads for each user every 3 months.  Replacement heads can be purchased in various pack sizes, but each head typically works out at around $7.

Here at Electric Teeth, we like to calculate the approximate cost of ownership over a 3 year period to try and give you a guide to what it would cost, as well as a benchmark for other brushes.

Using the average cost of $100 for the brush, plus the cost of a further 9 brush heads over 3 years, the total ownership cost comes in at $163 or $0.15 per day.

At full price this would cost $262 or $0.24 per day.

This price does exclude the cost of water, toothpaste and electric to charge it. This also assumes one user as well as some other assumptions, but you get a rough idea.

You can bring the cost down further if you were to share it with other members of your household.  All you need do is invest in extra brush heads.

Please note that all prices quoted are approximates and will vary based on location, supplier and time of purchase.  These figures were correct at the time of writing and should not be relied upon as hard fact, but used as a guide during your decision process.

Summary of price & where to buy

  • Recommended retail price of $199
  • Generally available with 50% or more off RRP; circa $100
  • Works out at around $0.15 per day over 3 years
  • Share brush handle with another user to extend the value

Reliability & long term use

We would all love the products we buy to last forever.

Sadly, this is not the case, but many products do last for a reasonable amount of time and we have read many stories of users enjoying 5+ years from their Oral-B electric toothbrush.

Every brush that we test, we check over for obvious signs of weakness or defects.

Oral-B Smart 4 4000 Review 28

The very nature of being an electronic item with moving parts does indeed make the brush susceptible to failure.  However, the reliability of Oral-B products tend to be very good.

With the Smart 4 4000, a 2 year/24 month warranty is included as standard from the time you buy the brush.

Therefore should the brush fail within the first 2 years of ownership you are covered.

You do too have the 180 money back guarantee, which allows you to return it, even if its not faulty!

For 99.9% of users there will be years of hassle free brushing, but should you be one of the 0.01% where inevitably something does go wrong, Oral-B do not leave you high and dry.

You can get full details of the warranty and the associated process here.

The Smart 4 uses a handle design that has been tried, tested and perfected over many years and I really can’t find any obvious faults with it.  It is well built and solid in hand.

I know from past experience that most Oral-B models will survive a few falls to the bathroom floor, in most instances.

Oral-B Smart 4 4000 Review 29


I give the Smart 4 4000 a rating of 4 out of 5.

It is a solid electric toothbrush that will serve you well.

There is no denying that this brush cleans the teeth and mouth well.  

It offers a pretty decent battery life, whilst also looking fairly good and feeling slim in hand.

2 versions, one with and one without a travel case is less than ideal. Go for the travel case included option if you can.

The problem if you can call it that, is it potentially feels a bit lost in the Oral-B range.

Yes, it is the cheapest smart toothbrush. However, you don’t need this, so the likes of the Pro 2 2000 become more appealing.

Should you really then want a smart brush, models like the Genius range do offer just that bit more, which might be worth the extra spend.

Our Choice
Oral-B Pro 2 2000 Black Electric Toothbrush and Travel Case
Oral-B SMART 4 4000 Rechargeable Electric Toothbrush, Powered by Braun
Oral-B Genius 9000 White Electric Toothbrush
Brush Name
Oral-B Pro 2 2000
Oral-B Smart 4 4000
Oral-B Genius 9000
Customer Rating
Electric Teeth Rating
$ 79.00
$ 99.00
$ 174.00
Shaver Shop
Oral-B Smart 4 4000 Review 1
Oral-B Smart 4 4000 Review 1
Oral-B Smart 4 4000 Review 1
Our Choice
Oral-B Pro 2 2000 Black Electric Toothbrush and Travel Case
Brush Name
Oral-B Pro 2 2000
Customer Rating
Electric Teeth Rating
$ 79.00
Shaver Shop
Oral-B Smart 4 4000 Review 1
Oral-B SMART 4 4000 Rechargeable Electric Toothbrush, Powered by Braun
Brush Name
Oral-B Smart 4 4000
Customer Rating
Electric Teeth Rating
$ 99.00
Shaver Shop
Oral-B Smart 4 4000 Review 1
Oral-B Genius 9000 White Electric Toothbrush
Brush Name
Oral-B Genius 9000
Customer Rating
Electric Teeth Rating
$ 174.00
Shaver Shop
Oral-B Smart 4 4000 Review 1

Electric Teeth Rating

Electric Teeth 4 Star Rating

Size Guide

  • Height (without head) – 19.5cm
  • Height (with head) – 23.5cm
  • Width – 2.3cm
  • Thickness – 2.9cm
  • Weight (without head) – 123g
  • Weight (with head) – 129g

All are approximates


  • Is the Smart 4 4000 electric toothbrush an oscillating brush?
    • Yes, with Oral-B 3D motion that oscillates, rotates and pulsates.
  • What is daily clean mode?
    • This is the comprehensive everyday cleaning mode that works with the provided CrossAction brush head to effectively clean the teeth using the Oral-B 3D oscillating, rotating and pulsating technology to clean the teeth and remove up to 100% more plaque than a manual brush.
  • What is sensitive mode?
    • A gentle yet thorough cleaning mode that combined with the sensitive brush head works to remove bacteria and plaque from sensitive areas of the mouth.
  • Does it have any other cleaning modes?
    • No, it has 3 cleaning modes Daily Clean, Whitening and Sensitive. For more cleaning modes consider the Smart 5 5000 that offers 5 modes or the Genius 9000 which offers the maximum 6 modes.
  • What brush head does it come with and what alternative ones can be used?
    • The brush heads that are supplied with the Smart 4 are 1x CrossAction, 1 x FlossAction and 1 x 3D White.  You can change the head with any others on offer from Oral-B. There are many that work with the brush handle.  There are 6 main brush head options you can choose from.
  • Does the Oral-B 4000 have a pressure sensor?
    • Yes, it does.
  • Does this Oral-B smart toothbrush have Bluetooth?
    • Yes, it does.
  • Does the Smart 4000 come with a warranty & how long is it?
    • If purchased new from an approved retailer the brush will come with a 2 year warranty.
  • Does the Smart 4 4000 have a built-in timer?
    • Yes.  Often referred to as the quadpacer; subject to the cleaning mode the brush will provide an audible warning through a slight pause in the brushing mode to tell you to change quadrants.  There are 4 quadrants to the mouth, and brushing is normally for 2 minutes.  The timer will active at 30 second intervals, with a different sound at the end of the 2 minutes.  There is no visual timer included, although you can see the pause in the brushing mode if watching the brush head itself.
  • How long does the battery last?
    • The battery lasts up to 66 minutes, which if used on the standard daily clean mode is 16 days based on 2 cleans per day.
  • Does it come with a charger?
    • Yes, a charging station is included with the Smart 4 4000.
  • Can this be fixed to a wall?
    • The Smart 4 4000 charging station or brush head holder has not been designed to be fixed to a wall.
  • Can I use the Smart 4 4000 in the shower?
    • Yes.  The Smart 4 is water resistant so if you choose you can use it in the shower. Avoid submerging it in water.
  • Does it come with a travel case?
    • Yes, if you buy the Shaver Shop Exclusive variant. All others do not come supplied with a case.

Your Opinions

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About Jon Love

Jon is a leading voice on electric toothbrushes and has been quoted by mainstream media publications for his opinions and expertise.

Having handled & tested hundreds of products there really is very little he does not know about them.

Passionate about business and helping others, Jon has been involved in various online enterprises since the early 2000s.

After spending 12 years in consumer technology, it was in 2014 that he focused his attention on dental health, having experienced first-hand the challenge of choosing a new toothbrush.

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