Function: 12 Frequency Vibration Color: Navy Size: 13 * 3 cm/5.1  * 1.2 inch Net Weight: 113 g/0.25 lb/3.9 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/Knocking/Wireless Package Size: 16*13*4.5 CM