The world's first of its kind with Bluetooth communication between brush and smartphoneReal-time feedback with the Oral-B app focuses brushing on your most important areas, tracks habits over time, motivates with helpful oral care tips, and senses when you brush too hardCrossAction round brush head with perfectly angled bristles for a precise clean. Specially designed seals and gaskets keep the Oral-B 7000 water tolerant to 500 millibars of pressureClinically proven superior 3D cleaning oscillates, rotates and pulsates to break up and remove up to 100% more plaque than a regular manual toothbrushRechargeable with 6 modes: Daily Clean, Gum Care, Sensitive, Whitening, Deep Clean, and Tongue CleanerAmazon Dash Replenishment Enabled: With Dash Replenishment, this toothbrush will automatically place an order for brush heads when it's time for replacement so you never run out