Improve your gum health up to 100% better than a manual toothbrush with the ProtectiveClean 5100 rechargeable electric toothbrush. It has a pressure sensor that protects teeth and gums from excess brushing pressure. Brush heads wear out over time. Our BrushSync technology tracks how long you have been using your Optimal Gum Care brush head and how hard you have been brushing and will beep to inform you when to replace your brush head. Customize your own brushing experience with your choice of 3 modes: Clean, White and Gum Care. The easy-start feature slowly increases the power of the brush as you get used to the Sonicare experience and the smartimer encourages a full 2 minutes brushing time as recommended by your dental professional. The battery charge indicator light lets you know when it is time recharge; 2 week battery life. The kit includes 1 ProtectiveClean 5100 handle, 1 Optimal Gum Care brush head, 1 charger, 1 travel case. 1 Philips Sonicare 5100 handle, 1 charger, 1 Optimal Gum Care brush head, 1 travel case