Philips sonicare ProtectClean HX6839/66 Manual page 33

Note: When the Philips Sonicare toothbrush is used in clinical
studies, it must be used in the Clean mode (for plaque and gum
health claims) at high intensity with EasyStart turned off.
Features
- EasyStart
- Brush head replacement reminder
- Pressure sensor
- Quadpacer
Easy-start
This Philips Sonicare model comes with the EasyStart feature
deactivated. The EasyStart feature gently increases the power over
the first 14 brushings to help you get used to the brushing with the
Philips Sonicare. The EasyStart feature works in all modes.
To activate EasyStart see 'Activating or deactivating features'.
Brush head replacement reminder
Your Philips Sonicare is equipped with BrushSync technology that
tracks the wear of your brush head. (Fig. 14)
1 When attaching a new smart brush head for the first time the
brush head replacement reminder light blinks green three times.
This confirms you have a Philips brush head with BrushSync
technology.
2 Over time, based on the pressure you apply and the amount
of time used, the handle will track brush head wear in order to
determine the optimal time to change your brush head. This
feature gives you the guarantee for the best cleaning and care
of your teeth.
3 When the brush head replacement reminder light lights up
amber, you should replace your brush head.
To deactivate the brush head replacement reminder see
'Activating or deactivating features'.
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