Function: 9 Frequency Vibration Color: Black Size: 18 * 3.6 cm/7.0" * 1.4" Insert Length: 15.6 cm/6.1" Net Weight: 117 g/0.25 lb/4.1 oz Power: Lithium battery/3.7V/140mAh Material: ABS + Silicone Package: Color Box Further: Waterproof/Wireless Package Size:...