Our new and improved Elastomex formula, combined with a small yet powerful 3-speed vibrating bullet allows you and your partner to feel ever vibration. Designed with enhanced stimulation in mind, the Bathmate Vibe Ring range will boost your power, performance and pleasure. The Eight is designed to heighten pleasure by constricting the flow of blood, making for bigger, longer lasting, rock hard erections. The increased sensitivity of the penis will intensify your orgasm, leaving you and your partner more satisfied then ever before. Internal diameter: 0.9" Powerful 3 speed vibrating bullet USB rechargeable battery