Oral-B iO 3 Electric Toothbrush The Oral-B iO Series 3 electric toothbrush features Oral-B's best technology, combining a dentist-inspired round brush head with micro-vibrating bristles for the feeling of professional cleaning cleanliness at home. The intelligent pressure sensor helps prevent you from brushing too hard or too soft, protecting your gums better. For best results, replace your Oral-B iO brush head every 3 months. Highlights Oral-B's revolutionary iO technology provides a professional, cleansing feeling of cleanliness every day. 3 smart modes to personalize your brushing: Daily Clean, Whiten, Sensitive Brush Combine Oral-B's iconic dentist-inspired round brush head with gentle micro-vibrations to remove harmful bacterial plaque. The intelligent pressure sensor warns you with a red, white or green signal if you brush your teeth too hard, too soft or with just the right amount of pressure. The Smart Ring celebrates the completion of the 2-minute brushing recommended by the dentist by flashing a 360° colored ring. The iO's smart tracker reminds you with a yellow LED light when the brush head needs to be replaced to keep it as clean as possible.