The Revo series features a dual-speed, dual-rotating shaft that gently yet firmly massages the prostate. The perineum massage device offers 6 vibration modes for simultaneous stimulation. You can control both independently, providing 34 combinations of pleasure. The Revo is made of high-quality silicone, hypoallergenic and non-porous. It is waterproof, perfect for use in the bath or shower.