Watch your penis grow bigger and stronger with a suction pump that tracks your progress with precise measurements in a see-through chamber! The super-soft TPE rubber entry feels great and creates a perfect seal as you start off slow with the first suction speed, then amp up the pace to wherever you feel comfortable. A quick-release button makes sure you're always safe and secure. Pump your way to longer, harder erections, better ejaculation control - and more. The entry sleeve removes for easy cleaning and the powerful motor is rechargeable via USB.