Function: 10 Frequency Vibration Color: Black Size: 13.7 * 3.7 cm/5.3  * 1.4 inch Insert Length: 13 cm/4.7 inch Max Dia: 8.5 cm/3.3 inch Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/Inflatable/Wireless