The Big O is a bigger, better version of the Screaming O, and Kumiko Disposable Vibe Rings. This vibrating cock ring has a more substantial ring to lightly constrict the blood flow, and maintain erection. It also has a bigger, stronger vibrator with replaceable batteries! Press the button once for steady vibe, or twice for 9 stages of variable speed, and pulsing. *uses watch batteries. one set included*

$19.99