Function: 9 Frequency Vibration Color: Black Size: 10.1 * 4.1 cm/4.0" * 1.6" Net Weight: 46 g/0.1 lb/1.6 oz Power: Lithium battery/3.7V/140mAh Material: ABS + Silicone Package: Color Box Further: Waterproof/Magnetic charging/Wireless Package Size: 10x10.15x4.65cm