Function: 10 Frequency Vibration Color: Black Ring Dia: 4.5 - 3 cm/1.8 - 1.2" Net Weight: 73 g/0.16 lb/2.6 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof, Strong Vibration Package Size: 9.5*9.5*5.5 CM