Sign up for exclusive offers
Electric toothbrushes
All series
Philips Sonicare DiamondClean 9000 Series Sonic Electric Toothbrush, Special Edition
Support
HX9911/88
HX991M
Go to shop
Register your product
Register within 90 days after purchase and get an extended warranty (conditions may apply).
UK Declaration of conformity - English (US)
User manual
All (14)
How do I enable or disable the pressure sensor on my Sonicare?
Can I sync the Sonicare app with the Apple Health app?
How do I register my Sonicare toothbrush?
What are the brushing modes for my Sonicare toothbrush?
How does the pressure sensor feedback work on my Sonicare toothbrush?
Philips SonicareCompact travel case
Philips SonicareCharging glass
Philips SonicareCharging station
Philips SonicareCharging stand
I cannot connect my toothbrush to the Sonicare app
My Sonicare toothbrush is vibrating less powerfully
My Sonicare toothbrush is not charging
My Sonicare toothbrush vibrates too powerfully
My Sonicare toothbrush turns off by itself
Check the terms of your warranty and start a product exchange or repair
Warranty
Our product warranty policies
Contacting Philips
We're happy to help you