Healthy lifestyles start here. Sign up for updates
2 year warranty
Expert tips and inspiration
Philips Sonicare DiamondClean Smart Sonic electric toothbrush with app
Discontinued
Support
HX9945/08
Available in
Go to shop
Register your product
Register within 90 days after purchase and get an extended warranty (conditions may apply).
Eco Passport
User Manual
All (25)
Can I exchange points in the Philips Sonicare App?
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?
C3 Premium Plaque ControlStandard sonic toothbrush heads
G3 Two-in-one4-pack brush heads
TongueCare+Tongue brushes
C3 Two-in-one2-pack brush heads
C3 Two-in-one4-pack brush heads
G3 Two-in-one2-pack brush heads
W3 Premium White2-pack standard sonic toothbrush heads
C3 Two-in-one3-pack brush heads
G3 Two-in-one3-pack brush heads
G3 Premium Gum CareStandard sonic toothbrush heads
My brush head is difficult to attach or remove.
I cannot connect my toothbrush to the Sonicare app
My brush head falls off my Sonicare toothbrush
My Sonicare toothbrush is not vibrating
My Sonicare toothbrush turns off by itself