Yesido mg24 ipx7 waterproof sonic toothbrush highlights material: abs+pp+nylon bristles input voltage: dc5v charging power: 1w (max) rated power: 2w (max) battery capacity: 1500mah (lithium battery) charging current: dc5v/0.32a (max) usage duration: 90 times (2 minutes each) operating temperature: 15-35°c button: 1 (on/off, mode switch) vibration frequency: 38,400 times/minute cleaning modes: 5 (clean, sensitive, massage, brighten, polish) charging method: direct charging via type-c waterproof rating: ipx7