Function: 10 Frequency VibrationColor: Black/GreenSize: 8.0 * 7.5 * 5.1 cm/3.1  * 2.9 * 2.0 inchNet Weight: 53 g/0.11 lb/1.8 ozPower: Lithium batteryMaterial: ABS + SiliconePackage: Color BoxFurther: Waterproof