Function: 9 Frequency Vibration Color: Black/Green Size: 17.8 * 3.2 cm/7.0  * 1.2 inch Net Weight: 57 g/0.12 lb/2.0 oz Power: Lithium battery/3.7V/90mAh Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size: 10 x 10.15 x 4.65 CM