Product parameters：<br><br> Waterproof: Fully body waterproof IPX6 level(Can be used under water) <br> Material: Medical-grade silicone-ABS <br> Sound Level: <50dB ((Next door cannot hear any sound) <br> Vibration Mode: 10 Modes & Dual Motor<br> Votage: 3.7V <br> Charging Port: USB charging <br> Battery Capacity: 700 mAh <br> Battery Type: Lithium-ion battery (included) <br> Dimensions: 220x38x39 (LxWxH)mm <br> Massager Weight: 245g<br> Charging Time: 150 minutes<br> Usage time after fully charged: Only vibrating, it can last for 180 minutes<br><br> Package Includes:<br><br> 1x Massager <br> 1x USB charging cable<br> 1x User manual <br> 1x Satin storage pouch<br><br><br> How To Use<br><br> Long press the power button 3 seconds to enter standby status<br> Short press the power button to start working or change frequency<br> In working status, short press the “﹢” button to increase speed<br> In working status, short press the “﹣” button to decline speed<br> Long press the power button 3 seconds to turn-off.<br> RECHARGEABLE<br><br> Can not be used when charging.<br> Please ensure that the first use is full of electricity.