Equipped with features suitable for those who take a bit more pride in the care of their teeth the HX6731/02 offers 3 cleaning modes, different sized brush heads and sonic cleaning technology that can leave your teeth up to 2 shades whiter.
It also boasts a battery life of up to 3 weeks.
This is all sounds good, but what is it really like when you are using it for a prolonged period? Read our Philips Sonicare HX6731/02 review below or watch this video review to see hands-on footage.
We've also created an unboxing video, and a quick pros and cons overview video, both of which you can watch below. Let us know what you think in the comments.
To provide the best possible insight, we review a wide range of brushes. To view the complete list, see our electric toothbrush reviews page.
Price and where to buy
Available at prices ranging from £55 to £80 the Sonicare is a mid range prices brush for Philips and is perhaps a fraction more expensive than the mid range brushes from the competition, but there is little difference. Replacement brush heads come in at around £19 for a pack of 4 which is slightly higher than most other brushes. In fact it is about £5 per pack of 4 brush heads. Using the average price rather than the cheapest and assuming one user of the brush, you will have a first year cost of £80 (£65 for the brush and £15 for 3 replacement brush heads). Ongoing costs will then equate to approximately £19 per year for brush heads and the small cost of electricity to charge the brush. Based on a 3 years of ownership the cost will come to approx £123 or just 11p per day. This is on the higher side of cost ownership when we compare it to other brushes that offer similar features from the likes of Braun. Of course use it for longer or between more of you and it can become even more cost effective. Please note that all costs quoted are approximates and prices will vary based on location, supplier, time of purchase. These figures should not be relied on as hard fact but as a guide, based on real information at the time of writing.
Summary of Price
- Available for prices ranging from £33 to £80
- Replacement brush heads are about £19 for a pack of 4
- Works out at around 11p per day over 3 years
Fast, worldwide delivery.
- Free UK Delivery
- Easy to return
- International delivery
- No Telephone Support
£ Check Price
Reputable and good customer service.
- Free UK Delivery
- Easy to return
- No International Delivery
£ Check Price
Possibility to find a bargain.
- Delivery price varies
- Auction bidding
- International Delivery
- No telephone support
£ Price Varies
What's in the Box?
- Sonicare HX6731/02
- 2 brush heads (1 x Mini & 1 x Standard
- Charging Station
- Travel Case
- Hygienic Travel Cap
Philips Sonicare HX6731/02 Key Features
- 2 Brush Heads
- Sonic Technology
- Built in timer
- 3 Cleaning Modes (Daily Clean, Clean & White & Sensitive)
- Can leave your teeth up to 2 shades whiter
Design, Usability, Clean & General Use
From the outset the brush looks a bit clinical.
Whilst Oral-B brushes are not exactly game changers like the t.brush might be, the HX6731/02 looks like something out of a dentists lab.
A mix of white, grey and soft green accents of the power button and brush head the Philips Sonicare electric toothbrush will not look out of place in most bathrooms.
The main brush is almost completely circular, there is the slightest of oval shapes to it and the whole brush is lens angular than some of the Oral-B units.
The front panel of the brush is home to a rubber power button which is surrounded by a clear plastic panel with a pearlescent paint finish behind. The clear panel carries the branding and the names of the different cleans, above which is a single LED for each cleaning mode.
At the bottom of the panel is the battery indicator icon which is green when in use with power and orange when power is low.
The remaining two thirds of the brush has a soft touch rubber finish and the back of the brush has a series of raised ridges to help with grip when in use.
It feels fairly comfortable in hand, smooth and natural to grip.
The single power button activates the brush and you need to press it again to cycle to the next cleaning mode.
Whilst the brush automatically turns itself off at the end of a full brushing cycle you have to cycle through the different cleaning modes to actually turn the brush off or press and hold the button for 2 seconds.
To cycle through the modes. if you power the brush on, you will get the ‘clean’ mode. Press it once more to get ‘sensitive’ and again to get the ‘clean and white’ mode, press it once more to turn it off.
The ‘clean’ mode lasts for 2 minutes and at 30 second intervals the brush head is paused fractionally which in turn changes the sound to indicate to change to the next quadrant.
The ‘clean’ and ‘sensitive’ options last for 2 minutes whilst the ‘clean and white’ mode lasts for 2 minutes and 30 seconds. The final 30 seconds is designed to be spent focusing on the front teeth, 15 seconds for the top and 15 seconds for the bottom.
Philips claim with regular use of the ‘clean and white’ mode you can get up to 2 shades whiter on your teeth. I did not notice this, but if you are already particular about your oral hygiene this is to be less likely than if you are jumping to an electric toothbrush from a manual one.
The brush head simply pulls on and off. In the box you are provided with 2 heads a standard and a mini sized. I personally prefer the mini one as I felt I could get more easily to harder to
reach areas of the mouth.
When actually in use the brush head moves up to 31,000 times per minute and the brush is quieter than most other electric toothbrushes. In hand and mouth it feels a little odd initially as the brush emits a realy strong vibrate. It is quieter than an Oral-B brushes.
However for me, I did not personally feel the clean was as good. Whilst there were no indicators that it was a bad clean, the Cross Action head from Braun feels, if only psychologically to be getting into harder to reach gaps more and leaving me with more of a clean and fresh feeling after cleaning.
The included charging station has a holder for both heads and there is a travel case in the box with this brush.
You can leave the brush on charge all the time if you choose, it is safe to do so, but it you leave the battery to deplete completely, you will need to have in on charge for 8-12 hours to fully recharge it.
To keep the battery in good condition it is worth depleting it once every 6 months.
Unlike some other brushes there is also no pressure sensor or visual indicators for changing quadrants. Thus you do not know if you are pressing too hard when brushing and you need to listen for the sound change when brushing to know it is time to change quadrant. These are not deal breakers, but just something to consider.
Summary of Design, Usability, Clean & General Use
- Clinical looking brush with a insert panel showing cleaning modes
- LED indicators for different modes and battery
- Battery status feedback – different colours for different power percentage remaining
- Ridges on the rear for grip
- Brush automatically turns itself off at the end of each cleaning cycle
- 3 cleaning modes – Clean, Sensitive and Clean And White.
- Built in quad pacer and 2 minute timer tells you when to change quadrant and finish brushing
- Quiet brush with a high pitched humming sound
- Charging station with 2 brush head holders
- 2 brush heads in the box
To date the Arm & Hammer Spinbrush has set the bar for battery life on an electric toothbrush, powered by 2 x AA batteries is trooped on for a long time, months in fact. The Philips does not boast quite the same battery life but it is unfair to compare as they are in different leagues.
Sticking to the daily clean I got 3 weeks out of this brush which is impressive.
The different modes will have an affect on the results but this means you do not need to be constantly charging the brush like some of the cheaper models out there.
It is on the slightly larger side, but not much larger that it is obvious that the battery will last for longer.
The great performance in battery life is in part helped too by the fact that the brush intelligently turns itself off after the allotted brushing time. At times I found this frustrating if I wanted to brush a little longer but then again its not a massive deal to press that power button.
If the brush has a solid green light for the battery it has 50-100% power, a flashing green light suggest 10-49% power and less than 10% is shown by a flashing yellow light. This applies when on or off charge
Summary of Battery Life
- 3 weeks usage based on 2 cleans a day
- Powers off the brush at the end of a cleaning cycle
- A charger included in the box (comes with a 2 pin shaver socket connector)
- Prolong battery by discharging fully every so often
Reliability & Long Term Use
For 6 weeks on test, the HX6731 served me well.
There was nothing to suggest the brush would wear really badly over time, the feel of the brush is solid, the materials showed no signs of staining.
If I were to be super critical residue appears to build up around the power button more than I would have expected.
Only extended long term use will really confirm its reliability.
Whilst you can not always believe everything you read online, I have seen quite a few instances of complaints where the brush has failed. Some inside the warranty, others just after.
Sadly Philips offers only a 2 year guarantee, which is actually standard across the industry but Braun offer an additional year if you register online, which is well worth doing.
Of course to ensure long term reliability it is worth keeping the brush clean and removing grime and residue moisture where possible to save the materials and components from increased wear.
There are no real faults with the HX6731/02 – the slightly confusing name could be one!
My teeth felt clean, but I never came away with that really satisfied teeth clean.
The Sonic technology has a patent and the evidence must suggest it offers advantages but for me the sonic technology and what appeared to be almost motionless brush head did not leave me eager to pick the Philips electric toothbrush back up.
Perhaps the cross action style heads from Braun are more aggressive and gives that psychological feeling of a better clean, albeit it may not actually be any better, but I prefer it.
Ultimately it is personal opinion. I have been impressed by the battery life and the quieter sound of the brush compared to Oral-B.
Whilst you should ensure you buy the best brush for you, the Philips comes in a little on the pricy side for me to be justifiable as an everyday brush, unless you prefer the sonic technology and perhaps have a preference for the Philips brand.
Electric Teeth Rating
Height (without head) – 18cm
Height (with head) – 24.5cm
Width – 3cm
Thickness – 3.3cm
Weight (without head) – 139g
Weight (with head) – 144g
Frequently Asked Question & Answers
- What is clean mode?
- This is the comprehensive everyday cleaning mode that works with the provided brush head to effectively clean the teeth using the pulsating bristles of the brush head of the Philips brush that move at up to 31,00 strokes per minute.
- What is sensitive mode?
- This is a more gentle mode of brushing that is softer and uses less power on the teeth and gums and is ideal for those with sensitive teeth and gums or those suffering from inflammation.
- What is clean and white mode?
- A cleaning mode that lasts for 2 minutes and 30 seconds. A 2 minute clean and a 30 second white mode for focusing on the front teeth.
- Does it have any other cleaning modes?
- No, the HX6731 has only 3 cleaning modes. For more consider the DiamondCleanHX9332.
- What brush head does it come with and what alternative ones can be used?
- The HX6731/02 comes with 2 brush heads in the box. A ProResults standard and a ProResults mini which is smaller in size. Alternative brush heads can be purchased separately including Sensitive, InterCare, DiamondClean and ProResults.
- Does the Sonicare HX6731 have a pressure sensor?
- No, it does not.
- Does the Sonicare HX6731 have Bluetooth?
- No, it does have Bluetooth connectivity.
- Does the Sonicare HX6731 have sound connectivity?
- Yes, it does although it is not advertised with it.
- Does the Sonicare HX6731 come with a warranty & how long is it?
- If purchased new from an approved retailer the Sonicare HX6731 will come with a 2 year warranty.
- Does the Sonicare HX6731 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 (Extended to 2 minutes and 30 seconds with Clean And White mode. It will automatically power off at the end of the brushing cycle.
- How long does the battery last?
- The battery lasts up to 84 minutes, which is 3 weeks worth of cleans based on 2 cleans per day.
- Does it come with a charger?
- Yes, a charging station is included with the Sonicare HX6731.
- The charger is 2 pin, how can I use it?
- The charger is a 2 pin/prong charger designed to be used on voltages of 220-240 volts. It is a 2 pin charger suitable for connecting to shaver sockets found in many bathrooms in the UK & Europe. If you do not have a shaver socket, you can purchase an adapter that will allow the charger to be connected to a standard 3 pin UK mains socket.
- Can this be fixed to a wall?
- The Sonicare HX6731 charging station or brush head holder has not been designed to be fixed to a wall.
- Can I use the Sonicare HX6731 in the shower?
- Yes. The Sonicare HX6731 is waterproof so if you choose you can use it in the shower
- Does it come with a travel case?
- Yes, a travel case is included in the box.
Do you own or have you used the Philips Sonicare HX6731/02?
Are there certain features that you really like or dislike?
Let us know what you think about this brush and let others who may well be considering purchasing one know your opinions before they do.