In T3’s Philips Sonicare Diamondclean 9900 Prestige review ... tell you when to switch to a different part of the mouth. The handle is nice to hold and lightweight so it’s easy to move ...

This four-piece kit comes with a Philips Sonicare 6100 handle, a charger, a DiamondClean brush head and a travel case. It has pressure sensors that protect against brushing too hard to keep your teeth ...