Set of 2 x Oral-B iO4 Electric Toothbrush with Magnetic Technology and Micro-Vibrations, Smart Pressure Sensor, 4 Modes, 2 Heads, Travel Kit, Black/White The iO 4 electric toothbrush uses the best Oral-B technology, which combines a round brush head inspired by dental instruments and bristles that emit gentle micro-vibrations, for a professional cleaning sensation in the comfort of your own home. The smart pressure sensor helps prevent brushing too hard or too soft to protect your gums. Gum protection technology warns you if you brush with too much pressure. For optimal results, replace your Oral-B iO toothbrush head every 3 months. The best cleaning from Oral-B WITH THE NEW revolutionary iO TECHNOLOGY for a professional clean feeling and a gentle brushing experience Designed for sensitive teeth and gums, iO combines the special round Oral-B toothbrush head with gentle micro-vibration bristles for a fresh and clean feeling in the mouth and 100% healthier gums in just one week. It has 4 TOOTHBRUSHING MODES to allow for personalized brushing: daily, teeth whitening, sensitive, extra sensitive THE INTELLIGENT PRESSURE SENSOR indicates in red, white or green if you are brushing your teeth too hard, too weak or with the right strength Box contents: 1 iO4 handle with 1 toothbrush head, 1 travel case, 1 charging stand, 1 holder for spare head