Commander Electric Pump Red from Nasstoys of New York. High vacuum electric pump3 sleeve sizes for a snug fit. Extra large cylinder for maximum enlargement. Water resistant.Phthalates free. RoHS compliant. Materials: Silicone, Acrylonitrile Styrene AS, ABS Plastic, PVC. Pump size length 11.5 inches, diameter 2.75 inches, Circumference 8.75 inches. Three sleeve sizes: (internal diameter of opening) Small 1.125 inches, Medium 1.375 inches, Large 1.5 inches. Cord length: 51 inches. USB cable included. Rechargeable no batteries necessary. Charging time up to 1 hour. Use time: 50 times after fully charge.