The battery charge indicator light indicates when it is time recharge. the philips sonicare protectiveclean 4300 rechargeable toothbrush has a 2-week battery life. philips sonicare protectiveclean 4300 rechargeable toothbrush, 2 pack: fits all sonicare click-on handles pack of 2 handles and brush heads pressure sensor alerts when brushing too hard sonicare 4300 toothbrush features densely-packed high-quality bristles that give extra-gentle brushing removes up to 7 times more plaque than a manual power toothbrush it will beep to inform when a brush head needs to be replaced the battery charge indicator light shows when it is time to recharge 2-week battery life the easy-start feature slowly increases the power of the brush as the person gets used to using it the smartimer encourages a full 2 minutes brushing time as recommended by dental professionals.
