Function: 9 Frequency Vibration Color: Black/Green Size: 9 * 4.9 cm/3.5  * 1.9 inch Net Weight: 46.5 g/0.1 lb/1.6 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size: 10 x 10.15 x 4.65 CM