Satisfyer is excited to launch the line of Duo “double” vibrating penis rings – each complete with a ring to secure and stimulate the shaft as well as the testicles. Perfect for strengthening and sustaining erections while heightening and delaying pleasure, our Duo line up will not disappoint… Each Duo is equipped with a powerful motor to transmit vibrations through the silicone bands and head of the motor, simultaneously arousing your partner during penetration. The Legendary Duo has a thinner and slightly curved head and comes in Black. Its loops are thick and have a flattened interior. The one-touch power button is nestled within a metallic detail on the vibrating head. - Body friendly silicone - Rechargeable - Waterproof IPX7