Function: Sex Delay RingColor: BlackSize: 2.0 - 2.3 - 3.7 cm/0.78 - 0.9 - 1.4 inchNet Weight: 9 g/0.01 lb/0.3 ozPower: NoMaterial: SiliconePackage: OPP BagFurther: Waterproof/luminousWhite Color is luminous