Oral B iO three Series Electric ToothbrushFunctionFeatures: 1. Revolutionary magnetic technology, which makes use of a magnetic pressure motor to rotate the comb head, offering three times the cleaning energy of an everyday sonic toothbrush and efficiently cutting off dental plaque within 7 days 2. Intelligent strain control, computerized strain adjustment power 3. Pressure indicator: White mild - insufficient force, green soft - correct force, red tender - excessive strain 4. 30 moment zone change reminder, 2-minute clever timing 5. Three modes: on every single day foundation cleaning, sensitive, whiteningParameters: Waterproof grade: IPX7 Charger: Induction charger