Function: 11 Frequency Vibration Color: Black Size: 11.4 * 3.0 cm/4.4  * 1.2 inch Net Weight: 142 g/0.31 lb/5.0 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size: 16.5*16.0*7.0 CM