Product parameters：<br><br>Waterproof: Fully body waterproof (Can be used at shower or bathtub) <br>Material: Food grade silicone<br>Noise Level: <50dB (Next door cannot hear any sound) <br>Remote Control: 10m remote control<br>Play Mode: 12 patterns<br>Charging Method: USB charging <br>Battery Type: Rechargeable battery (included) <br>Charging Time: 150 minutes<br>Usage time (fully charged): About 60 minutes<br>