5 modes, 2 brush heads, Glass charger, Travel case HX9312/01
How to recalibrate Philips Sonicare toothbrush pressure sensor settings
If your Sonicare pressure sensor is too sensitive, or not sensitive enough, you can re-calibrate the pressure sensor settings.
How to calibrate the pressure sensor settings
If your handle is currently on the charger, please remove it. 2. Place your handle on the charger. Make sure that the charger is plugged into a live outlet. Leave the handle on the charger for at least 45 seconds. 3. Remove your handle from the charger and place it back on the charger for at least 45 seconds four more times.