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Experience Next-Generation Sonicare with the DiamondClean 9900 Prestige electric toothbrush and SenseIQ Adaptive Intensity, delivering real-time personalised guidance. Achieve 20 x more plaque removal* for a gentle yet effective clean.

No. 1 Dental professional reccomended sonic toothbrush brand worldwide1
This product
DiamondClean 9900 Prestige
Rechargeable Toothbrush
£ 634.99
£ 634.99
£ 634.99
Smart coverage feedback
SenseIQ Adaptive Intensity
20 x more plaque removal*
Up to 15 x healthier gums**
Next-Gen Sonicare Technology
Feel our best clean with the A3 All-in-One brush head. Remove 20 x more plaque, enjoy up to 15 x healthier gums in six weeks and see 100% more stain removal in less than two days versus a manual toothbrush. Enjoy a gentle yet effective clean for your teeth and gums with 62,000 bristle movements per minute.
The toothbrush closely follows your progress to help you clean thoroughly. The light ring at the base of the handle glows yellow when a segment of your mouth still needs attention. When it glows blue, the area is clean and you can move on to the next segment. Finished cleaning? A glance at the mouth map on the handle's display will show you any areas that need a touch-up.
SenseIQ Adaptive Intensity helps protect your teeth and gums by automatically adjusting to your brushing style. When Pressure + SenseIQ is activated, the toothbrush senses pressure, motion and coverage up to 100 times a second and reduces the intensity if you brush too hard.
4.6
of 5
155
Reviews
80%
recommend this product
AriS
20/10/2026
United Kingdom
Part of promotion
Changed my life.
LITERALLY CHANGED MY LIFE. I’m not afraid to admit I never got over hating brushing my teeth since I was a kid, and this has completely and utterly changed me - and I’m not even being dramatic! Their coverage feature has gamified the experience of brushing my teeth, since I want a perfect score every time. It’s easy to use (the end lights up yellow and blue depending on coverage), and has so many different modes - I also enjoy seeing the timer properly and knowing how long I’ve brushed for. Also, the new cap is genius - no bathroom particles actually access the brush now. Super easy to charge too, with a cup or in an on the go pod. The best brush I’ve ever had 10000%.
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
SaiT
02/10/2026
United Kingdom
Part of promotion
Great product
Wow what an amazaing product from the Phillips fsmily . I have been little worried using an electric tooth brush but this was very easy to set up and great performance keeping my teeth clean and shinny
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
LukeA
29/09/2026
United Kingdom
Part of promotion
Good options to select
I love this toothbrush and I really wasn’t a fan of electric toothbrush’s before this. Always used a manual one. It cleans really well and you can select the different levels of vibrations which is nice. It also tells you when you’ve cleaned certain sections of your teeth and tells you to move on. Overall a great product.
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
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Based on a study of over 2600 dental professionals (dentists and hygienists) conducted in the United States, Canada, China, France, Germany, Italy, Japan, Korea, the Netherlands, Switzerland, Spain, Sweden and the United Kingdom in 2023-2024.
vs. a manual toothbrush.
in Clean mode vs. a manual toothbrush in 6 weeks.
in less than 2 days vs. a manual toothbrush.