Function: 10 Frequency Vibration Color: Black Size: 13.5 * 10 * 2.9 cm/6.3" * 3.9" * 1.1" Net Weight: 110 g/0.24 lb/3.88 oz Power: lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof, USB Recharge Package Size: 17*12.5*5.3 CM