2 year warranty
Philips Sonicare DiamondClean Prestige 9900Rechargeable Toothbrush - Trial Unit NOT FOR RESALE
HX9994/12
HX999B
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#1 Dental Professional recommended sonic toothbrush brand worldwide
Gently removes up to 20x more plaque*
Personalized care for your oral health
SenseIQ
20x more plaque removal*
15x healthier gums**
Visual pressure sensor
5 modes & 3 intensities
20x more effective on plaque*, gentle on gums
Everyone cleans differently, so we designed this brush head with multi-angle bristles to keep plaque removal on course no matter your technique. Our All-in-One A3 brush head delivers our best cleaning and removes up to 20x more plaque, 15x healthier gums in six weeks, and up to 100% more stain removal in less than two days versus a manual toothbrush.
SenseIQ Technology for your personalized experience
SenseIQ Technology helps balance your brushing style and senses your pressure, motion and coverage up to 100 times per second while you brush. If you apply too much pressure, the toothbrush will step in and automatically adjust the intensity level, helping to protect your teeth and gums.
Sonicare Fluid Action
Philips Sonicare toothbrushes clean gently yet effectively and care for your teeth and gums with 62,000 bristle movements per minute. Sonicare Fluid Action supports the bristles to clean by driving fluid deep between teeth and along the gumline.
Technical Specifications
Awards
Reviews
Understand product reviews
4.2
of 5
483
Reviews
84%
recommend this product
Dogtime
07/07/2026
US
Part of promotion
Verified buyer
Overall, great toothbrush. A cleaning like being at the dentist. The downside is the mess it can make in and around ones sink from the splatter. Be prepared.
Yes, I recommend this product
This review was made for Prestige 9900 HX9990/12 Rechargeable Toothbrush
Date of Use 2026-07-06
Yes, I recommend this product
This review was made for Prestige 9900 HX9990/12 Rechargeable Toothbrush
Date of Use 2026-07-06
Mytyme83
08/06/2026
US
Part of promotion
Verified buyer
Better than the dentist
I chose a 4 Star rating because everytime I use it, I feel like I just let the dentist office. The power of the bristles slung my toothpaste across the room. I love the app. The app shoes you where to brush better at. Where you brush to hard, and more. The app can even automatically order you new toothbrush heads. I recommend this toothbrush to everyone.
Pros
Lightweight, app, great product
Cons
None
Yes, I recommend this product
This review was made for Prestige 9900 HX9990/11 Rechargeable Toothbrush
Date of Use 2026-05-01
Yes, I recommend this product
This review was made for Prestige 9900 HX9990/11 Rechargeable Toothbrush
Date of Use 2026-05-01
Rogersax
27/05/2026
US
Part of promotion
Verified buyer
3 speed vibration, softer than what it used to be Much better than Oral B
This review was made for Prestige 9900 HX9990/12 Rechargeable Toothbrush
Date of Use 2025-07-01
This review was made for Prestige 9900 HX9990/12 Rechargeable Toothbrush
Date of Use 2025-07-01
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vs. a manual toothbrush
in 6 weeks vs. a manual toothbrush.
in less than 2 days vs. a manual toothbrush.