Function: 20 Frequency Vibration Color: Red/Purple/Pink/Black Size: 20.5 * 4.3 cm/8.1" * 1.7" Net Weight: 156 g/0.34 lb/5.5 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Waterproof Package Size: 24*7*4.5 CM