Function: 12 Frequency Vibration Color: Black Size: 16 * 4.3 cm/6.3" * 1.6" Insert Length: 12 cm/4.7" Net Weight: 184 g/0.4 lb/6.4 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size: 20*11.5*4.5 CM