Healthy lifestyles start here. Sign-up & save
2 year warranty
Expert tips and inspiration
Electric toothbrushes
All series
Philips Sonicare DiamondClean Prestige 9900 Rechargeable Toothbrush - Trial Unit NOT FOR RESALE
Support
HX9994/12
HX999B
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
Experience personalized coaching!
Real-time feedback, Habit tracking, Streaks and celebrations. Download now!
User Manual
All (20)
How does the brushing guidance work in the Sonicare app?
Do I need an Alexa device to reorder replacement brush heads for my Sonicare?
How do I enable or disable the pressure sensor on my Sonicare?
How do I reorder Sonicare replacement brush heads with Alexa?
How do I disable the Sonicare brush head reordering service?
My brush head is difficult to attach or remove.
Check the terms of your warranty and start a product exchange or repair
Start a product exchange
Apply for a warranty replacement product from Philips
Warranty
Our product warranty policies
Links that might be useful for a better experience with your product
USB adapter
If you do not have a splashproof USB adapter, you can request it here
Contacting Philips
We're happy to help you