Function: 10 Frequency Vibration Color: Rose + Gray Size: 20.5 * 5.5 cm/8.0" * 2.1" Insert Length: 17.5 cm/6.8" Net Weight: 491.5 g/1.0 lb/17.3 oz Power: Lithium battery Material: ABS + Silicone Package: OPP Bag Further: Waterproof/Wireless