Function: 9 Frequency VibrationColor: BlackSize: 21 * 3.8 cm/8.3" * 1.5"Net Weight: 103 g/0.23 lb/3.6 ozPower: Lithium batteryMaterial: ABS + SiliconePackage: Color BoxFurther: IPX7 Waterproof, USB Magnetic ChargingPackage Size: 25x 9.15x 5.15cm