Function: Vibration Cock RingColor: BlackSize: 10.5 * 3.8 cm/4.1" * 1.5"Bullet Size: 4.5 * 1.6 cm/1.8" * 0.6"Net Weight: 25 g/0.06 lb/0.88 ozPower: Button BatteryMaterial: ABS + SiliconePackage: Color BoxFurther: WaterproofPackage Size: 14*8*4 CM