Bathmate Hydro VibeHydrotherapy Ring. USB Rechargeable. 2 x 10 Function Bullets. IPX7 100% Waterproof. Pumping but not as you know it. Bathmate has always been about gains but for the first time with the addition of the Hydro VIBE Bathmate pumps not only give you gains but they also create pleasure. 65 powerful vibration variations are achieved with the attachment of 2 x 10 speed IPX7 rated waterproof vibrating bullets stimulating the penis in ways never before