Healthy lifestyles start here. Sign up and get exclusive offers
2 year warranty
Welcome gift £10*
30-day return
Electric toothbrushes
All series
Philips Sonicare DiamondClean 9000 Series Special edition sonic electric toothbrush
Support
HX9911/79
HX991K
Available in
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 (18)
How can I recycle my Philips Sonicare Toothbrush?
Do I need an Alexa device to reorder replacement brush heads for my Sonicare?
How does the pressure sensor feedback work on my Sonicare toothbrush?
How do I enable or disable the pressure sensor on my Sonicare?
How do I reorder Sonicare replacement brush heads with Alexa?
Philips SonicareCharging station
Philips SonicareCompact travel case
Philips SonicareCharging glass
DiamondClean Smart & DC 9000 Charging station
My brush head is difficult to attach or remove.
My Sonicare toothbrush turns off by itself
My Sonicare toothbrush is vibrating less powerfully
I cannot connect my toothbrush to the Sonicare app
My Sonicare toothbrush vibrates too powerfully
Check the terms of your warranty and start a product exchange or repair
Warranty
Our product warranty policies
Service and exchange
Get your broken product serviced or replaced
Contacting Philips
We're happy to help you