Function: 12 Frequency Vibration Color: Black/White Size: 20.8 * 9.1 cm/8.1" * 3.5" Net Weight: 485 g/1.06 lb/17.1 oz Power: Lithium battery Material: ABS + TPE Package: Color Box Further: Waterproof Package Size: 21.2*11.2*11.2 CM