The Screaming O Double O 8 Speed Vibrator. The Double O 8 vibrating erection ring features two specially positioned rings and a vertical vibrator angled for maximum stimulation where traditional vibrating rings can not reach! Simply stretch one ring around the shaft and the other around the testicles for an extra-secure fit and super-powered pleasure where it counts! Features: vertical vibrating double ring. Extended angled vibrator for full-motion contact. Double rings for a snug grip 1 for shaft and 1 for testicles. Super-powered bullet motor for mutual satisfaction. Soft pleasure ticklers for enhanced sensations. Additional Information: Reusable. Replaceable AG13 batteries last 80+ minutes. SEBS silicone. Latex and phthalate-free. Wireless. Waterproof vibrations.