This vibrating cock ring has an attached control that allows the wearer to create 10 distinct vibrations. The user uses a bullet vibrator to create the vibration sensations. So while he is able to maintain and longer, harder erection -- thanks to the functionality of the cock ring -- his partner gets the added vibe benefit. The cock ring is made of rubber and waterproof for fun in and out of the bath/shower. The control uses 3 AA batteries (not included).