Function: 10 Frequency Vibration Color: Black/Black + Red Size: 8.8 * 4.7 * 5.8 cm/3.4  * 1.8 * 2.3 inch Inner Dia: 3.7 cm/1.4 inch Net Weight: 66 g/0.14 lb/2.3 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof/3 Motors