Function: 3 Model 10 Frequency Vibration  Color: Black Size: 16.3 * 7.4 * 5 cm/6.4" * 2.9" * 2.0 Insert Length: 22 cm/3.9" Net Weight: 182 g/6.4 oz/0.4 lb Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: Double Motor， USB...