<p>WARNING: Waterproof but not soaked<br>Specifications:  Rated working<br>voltage: 3.7V<br>Waterproof: IPX7<br>Power supply: USB charging (USB cable included)<br>Charging time: <5H<br>Input current: ≤300mA<br>Suggest use time per strength: 5min/strength<br>Battery:lithium batteries<br>Battery capacity: 2600mAh</p>