Function: 2*9 Frequency Vibration Color: Black Size: 11.7 * 3.6 cm/4.6" * 1.4" Net Weight: 151 g/0.33 lb/5.3 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size: 17x11.65x5.15cm