Manufacturer: Encore, Inc Revive premium vacuum erection device. Revive premium works by creating a gentle suction that creates the necessary bloodflow for an erection. It works in minutes with no side effects. Features a unique design making it the most advanced and effective vacuum therapy system available. The system has a success rate of over 95% and with no side effects. Features: -Only Vacuum Erection System that includes both a manual and battery device. -Comfort-Fit rings provide maximum comfort and strength. -Only system available that does not require personal lubricant to use. -Patented ring ejector sleeve. -Works in 30 seconds to one minute. -Built in pressure safety valve.