Healthy lifestyles start here. Sign up and get exclusive offers
2 year warranty
Electric toothbrushes
All series
Philips Sonicare DiamondClean Prestige 9900 Rechargeable Toothbrush
Support
HX9992/21
HX999C
Available in
Go to shop
Log in or create an account
You instantly have access to manuals, tailored support and more. Plus it’s quick and easy
Data Act Document
User Manual
All (25)
What features can I activate or deactivate from the toothbrush handle?
How does Sonicare 9900 Prestige work with the app?
How does the BrushPacer work on my Philips Sonicare Prestige Toothbrush?
Can I use Sonicare 9900 Prestige if I wear braces or have dental modifications?
How do I turn the Adaptive Intensity feature on and off?
My brush head is difficult to attach or remove.
My Sonicare toothbrush is not charging
My Sonicare toothbrush makes a loud noise
Check the terms of your warranty and start a product exchange or repair
Service and exchange
Get your broken product serviced or replaced
Warranty
Our product warranty policies
Contacting Philips
We're happy to help you