Experience a next-level clean with DiamondClean 9900 Prestige: remove 20x more plaque¹, enjoy up to 15x healthier gums², and achieve up to 100% more stain removal in less than 2 days¹
Brush smarter for complete coverage: smart coverage feedback guides you in real time, glowing blue for completed areas, and provides post-brushing feedback on the display to help retouch areas missed
Achieve perfect pressure: SenseIQ adapts the intensity to your brushing style; smart pressure feedback guides you in real time, glowing green when pressure is optimal to help protect teeth and gums
Tailor your care: customise your brushing session on the interactive display and choose between 8 modes and 3 intensities; connect your toothbrush to the Sonicare app to track your progress
The set includes: 1x Next-Generation DiamondClean 9900 Prestige rechargeable sonic toothbrush, 4x A3 All-in-One brush heads, 1x Prestige charging travel case, 1x Prestige charging base and glass
This Philips Sonicare toothbrush is covered by a 2-year limited warranty, and Philips offers a 100-day money-back guarantee if you are not satisfied with the product
Release Date: 16-06-2025
model number: HX9815/92
Part Number: HX9815/92
Details: Experience a next-level clean with the Philips Sonicare Next-Generation DiamondClean 9900 Prestige. This rechargeable toothbrush senses and adapts to your unique brushing routine, delivering real-time personalised guidance, so you can care for your oral health the right way, every day. Gently remove 20x more plaque¹, enjoy up to 15x healthier gums², and achieve up to 100% more stain removal in less than 2 days¹.
This sonic toothbrush features smart coverage feedback, which helps you achieve a complete clean by providing real-time guidance as you brush. The light ring at the base of the handle glows yellow when an area of your mouth needs cleaning and blue once an area is cleaned. After your brushing session, post-brushing feedback on the handle’s display shows any areas needing a retouch, helping you achieve a complete clean every time you brush.
SenseIQ adaptive intensity automatically adjusts to your brushing style, sensing pressure, motion and coverage up to 100 times per second. If you brush too hard, the toothbrush automatically reduces the intensity to help protect teeth and gums. In addition, smart pressure feedback helps you achieve the perfect pressure with 3-level instant feedback: the light ring at the base of the handle glows green for optimal pressure, pulses purple with a gentle vibration if you are brushing too hard, and slowly fades to purple if pressure is too light. After each brushing session, post-brushing feedback on the handle’s display shows where to adjust pressure in the future.
Effortlessly swipe through 8 modes − Clean, Deep Clean, White, Gum Health, Sensitive, Max Care, Comfort and Polish − and 3 intensities on the interactive colour display, for a brushing experience tailored to you.
Enjoy a gentle yet effective clean even in hard-to-reach areas with 62,000 bristle movements per minute, powered by Next-Generation Sonicare Technology. Meanwhile, Sonicare Fluid Action supports bristle cleaning between the teeth and along the gumline.
The Sonicare app helps you celebrate your progress. Connect your toothbrush to the app to track daily brushing, access your personalised dashboard and receive tips to improve your brushing technique.
This Sonicare DiamondClean 9900 Prestige comes with a Prestige charging base with glass and a Prestige charging travel case, keeping your toothbrush charged wherever you go.
¹ vs. a manual toothbrush.
² in Clean mode vs. a manual toothbrush in 6 weeks.
