Function: 10 Frequency VibrationColor: Black/WhiteSize: 10.0 * 3.7 cm/3.94 * 1.46 inchInsert Length:8.0 cm/3.15 inchNet Weight: 57 g/0.13 lb/2.01 ozPower: Lithium batteryMaterial: ABS + SiliconePackage: Color BoxFurther: Waterproof/APP Smart ControlPackage: 12.5 * 8 * 4.5CM