Function: 16 Frequency Vibration Color: Black Size: 11.5 * 3 cm/4.4  * 1.2 inch Net Weight: 111 g/0.24 lb/3.9 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/Knocking/Heating/APP Control Package Size: 15.8*15.8*5.8 CM