The Oral-B iO's innovative magnetic drive system delivers energy with pinpoint accuracy to the bristle tips, which glide from tooth to tooth with gentle micro-vibrations for an effective and comfortable brushing experience. Enjoy a fresh, dentist-like feeling every day. The Oral-B iO helps you protect your gums from too much pressure. The intelligent pressure control warns you of too much pressure with a red light and glows green when you are using the optimal pressure. An interactive display allows easy navigation through the various functions and settings of the brush.