Product details The iO is Oral-B's best technology: Clinically Proven 400% More Plaque Removal Along Gumline versus a regular manual toothbrush. A Round head and gentle micro-vibrations, the Magnetic interaction delivers smooth, harmonious motion through a Synchronized cleaning action (micro-vibrations synced with oscillations). A Built-in-2-Minute Timer ensures an even easier experience, helping you get an optimal clean on all your teeth. The Oral-B's quadrant timer breaks the two minutes up into four 30-second intervals to clean each quadrant of your mouth; we keep the time, so you don't have to. Delivering the perfect pressure is done by having a Pressure Sensor. The Pressure Sensor Indicates optimal cleaning pressure and warns of over pressure. Included (1) Oral-B iO3 Electric Toothbrush, (1) Ultimate Clean Replacement Brush Head, and (1) charger -Clinically proven to remove 400% more plaque along the gumline vs. a regular manual toothbrush -3 Smart Modes for personalized brushing: Daily Clean, Whiten, Sensitive -Includes a 2 minute timer to ensure a complete clean -Pressure sensor indicates optimal cleaning pressure and warns of over pressure -Round head and gentle micro-vibrations Oral-B:Trust the brush Dentists use the most worldwide