Oral-B Smart 4 4000 Electric Toothbrush Experience Oral-B Smart 4, from the brand that brought you the first ever connected rechargeable toothbrush. The sleek white handle of the 4000 electric toothbrush improves your brushing habits. It seamlessly connects with the Oral-B app in your phone and guides you with real time feedback to brush better. While you are improving your brushing routine, Oral-B's unique round head does all the rest. It removes up to 100% more plaque than a standard manual toothbrush for healthier gums and it starts making your smile whiter as of the first day of brushing by removing surface stains. Not only this, but the toothbrush helps you protect your delicate gums with the proprietary pressure control technology that reduces brushing speed and alerts you to be gentler if you brush too hard. With the Smart Coaching you get from Oral-B Smart 4, 4000 toothbrush, you will improve your brushing habits and your oral health. No wonder Oral-B is the N1 recommended brand by dentists worldwide. - Oral-B Smart 4, 4000 electric rechargeable toothbrush is compatible with the following replacement toothbrush heads: Cross Action, 3D White, Sensitive Clean, Precision Clean, Floss Action, Tri Zone and Gum Care. Up to 100% more plaque removal: round head cleans better for healthier gums in 30 days vs a manual toothbrush - Protect your gums: pressure control reduces brushing speed and alerts you if you brush too hard - Gently whitens your teeth starting from day 1 by removing surface stains - Know you brush the right amount of time with the 2min professional timer - Better brushing results with real-time feedback thanks to Bluetooth connectivity and the Oral-B App3 Cleaning Modes (Daily Clean, Sensitivity & Whitening)3 Refills (Cross Action, 3D White, Floss Action)