3 Sizes for your choice:Length 15cm , Dia 3.5cmLength 17cm , Dia 3.5cmLength 21cm , Dia 4cmStyle:ElectronalHight quality silicone materialRealistic skin texture, and balls- for your pleasureSecure suction cup base,Suction Cup Diameter: 6cmCompatible with adjustable strap-onsThousands sold; back by popular demandPackage Included:1pc(Not included 2pcs 5AA Battery)