Function: 2 * 9 Frequency Vibration Color: Black Size: 15.8 * 5.3 cm/6.2" * 2.0" Net Weight: 116 g/0.25 lb/4.1 oz Power: Lithium battery/3.7V/240mAh Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size: 17x11.65x5.15cm