The Turbo vibrating erection ring features four vibrating motors, each 1.1 in. long, 0.63 in. wide, mounted around a 1.2-in. penis ring that will stretch to fit most guys. The smooth silicone gives this reusable ring enough elasticity to fit any length or girth. This vibrating love ring uses a simple one button control system and can run up to 40 minutes on the included watch cell batteries.