The Smart Automatic Penis Pump & Masturbator Sleeve is designed for men seeking both performance training and intense pleasure in a single, discreet, powerful device. It functions as a vacuum enlargement/exercise pump and a deep, textured stroker, allowing for enhanced erections and a realistic sensation simultaneously. Inside the clear cylinder is a soft 4D magic sleeve that grips and strokes the shaft. The electric pump creates negative pressure, drawing blood into the penis to support firmer, fuller erections over time. For pure pleasure, it can be used as a masturbator, providing a snug tunnel and the visual thrill of watching yourself grow in the transparent chamber. The built-in smart chip features multiple exercise modes with automatic pumping and release cycles. You can select from various stages or switch to manual mode for complete control over suction strength and timing. The sleeve is detachable and washable, and the ultra-quiet motor ensures discreet sessions. With interchangeable sleeve entrances, USB charging, and a comfortable 61 mm inner diameter cylinder, this 2-in-1 toy serves as both a training tool and a powerful orgasm machine.