Reddit reviews Philips Sonicare Series 2 Rechargeable Toothbrush, Coral

New version available - ProtectiveClean 4100 WhitePatented sonic technology delivers up to 31,000 brush strokes per minute. Features click on brush head systemTwo-minute timer helps ensure recommended brushing timeEasy-start feature slowly increases power over first 14 uses making the switch to Philips Sonicare easy.Two-color battery charge indicator lets you know when to recharge. 2 weeks battery life.Voltage:110-220 V