2 year warranty
Available in
Complete care is now 100% visible
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
141
Reviews
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
ImeldaK
26/09/2026
United Kingdom
Part of promotion
I won't go back to manual now - love how clean it makes my teeth feel
Wow this toothbrush is full of great technology, firstly a timer that tells you if you have brushed for the recommended time and secondly it tells you how much pressure your applying via the base of the brush changes colour. This tooth brush feels premium every accessory you can tell has been especially developed from the stylish black carry case to the chargeable quality glass with gold colour charging base. I thought using a manual brush would clean my teeth just as well.. but no after one use I recongise a complete difference and feel after. There are three setting low, medium and high. My happy place is medium as high was a bit too much and low not enough. I am really enjoying using the brush and my teenager now wants the same one for Christmas. Battery life seems to be a week for me but sometimes I brush three times a day. A really great brush that narrow head allows me to reach to the back of my teeth easily and it's light and easy to hold. Love it!
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
SaimaA
25/09/2026
United Kingdom
Part of promotion
Super squeaky clean teeth!
As some who uses a manual toothbrush from time to time, I am blown away by this toothbrush! The toothbrushes was easy to put together, I love the cup that you receive, it is perfect for placing the toothbrush in, and to keep it safe. The toothbrush blew me away, it has so many fantastic features such as you can choose the intensity, the coloured sensor tells you if your brushing too hard, you can receive feedback on the health of your teeth and your orders for replacement heads are placed for you! The instructions are clear and easy to follow, really helpful if you want to learn about the different features and how to use them. One of the greatest features about this toothbrush is that it is easy to use and brush your teeth with. It leaves your teeth feeling super clean and healthy. I love how I can track how many times I brushed my teeth and log down my oral hygiene routine. Alongside the toothbrush you can download an app that again shows you how to use the toothbrush effectively as well as highlights the areas of your mouth that you missed when brushing your teeth. Oral hygiene is very important to me and I do tend to spend hours brushing my teeth, flossing, using mouth wash, tongue scraping etc. This toothbrush has make the process somewhat easier for me and helped me to maintain my hygiene. The battery is long lasting, I love the bar on the toothbrush that tells me if my toothbrush is full charged or not and how much percentage the charging is at. The battery will last you a couple of weeks before needing to recharge. The toothbrush has a touch screen feature allowing me to swipe on the small screen to change the settings on the toothbrush. I also love the case that comes with the toothbrush, ideal to take with you when travelling or on holiday. It keeps the toothbrush safe and secure.
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
This review was made for DiamondClean 9900 Prestige HX9813/92 Rechargeable Toothbrush
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.