Wrist Watch Adjustable Size Vibration Cock RingFunction: 10 Frequency VibrationColor: BlackSize: 8 * 5.9 cm/3.1  * 2.3 inchNet Weight: 66.1 g/0.14 lb/2.3 ozPower: Lithium batteryMaterial: ABS + SiliconePackage: OPP BagFurther: Waterproof