Apollo Automatic Power Pump Smoke the most high tech pump on the market today massive results! The American Pumpers Association. Easy to use with unparalleled suction. Fully automatic pressure control with the push of a button. Auto start/stop button. Quick air release valve. Ergonomic hand-held controller with push button controls. Easy to read LED display measures PSI vacuum inside cylinder. Textured grip, over sized cylinder with universal measurements. Flanged base for a secure seal. Body safe donut. Safe and pure for body and pleasure made using phthalate free materials PC cylinder, ABS plastic with polyurethane PU Cote controller, Thermoplastic Rubber TPR donut, Silicone hose. Automatic penis pump requires 4 AAA, not included. Bulk Weight: 13.7 ounces. 10 inches by 2.5 inches cylinder.