Function: 2*9 Frequency Vibration Color: Black Size: 14.5 * 3.2 cm/5.7" * 1.2" Net Weight: 114 g/0.25 lb/4.0 oz Power: Lithium battery/3.7V/240mAh Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size: 17x11.65x5.15cm