VeDO ROCO Just Black Dual Motor Vibrating Ring. Roco rechargeable dual cock ring lends itself to those who love to touch themselves or be touched. Uniquely designed with a flexible silicone bracelet and removable controller. The controller powers 6 vibration modes with 5 levels of intensity to the finger pods. Simply slide your wrist into the bracelet, slip the two vibrating pods onto your fingers, press the on/off button, pick your vibration mode and let your fingers run wild. Pods are submersible not the controller. Material Silicone. USB rechargeable vibrating cock ring. Run time 45 minutes. Size length 9.5 cm inner diameter: 3.2 cm, 4.5 cm or approximately 3.74 inches, 1.25 inches by 1.77 inches.