Function: 10 Frequency VibrationColor: BlackSize: 3.5 * 2.5 * 4.8 cm/1.3  * 0.98 * 1.88 inchNet Weight: 15 g/0.03 lb/0.5 ozPower: Lithium batteryMaterial: ABS + TPEPackage: Color BoxFurther: Waterproof/Wireless