Set of 2 Oral-B iO9 Electric Toothbrush with Magnetic Technology and Micro-Vibrations, Artificial Intelligence, LED Display, Smart Pressure Sensor, Visible Timer, 7 Modes, 1 Magnetic Charger, 1 Travel Kit with Charger, Black/Pink Micro-Vibrations Inspired by dentists, the round brush head gives you a superior clean with micro-vibrations and oscillating action. Gum protection The smart pressure sensor displays a red light when you brush too hard and green when you brush correctly. Fast charging station The magnetic “lock-in-place” charger ensures a full charge in approximately 3 hours. Sensational Oral-B iO combines the round brush head with a gentle cleaning of the bristles with micro-vibrations.