Automatic Electric Ball Pump: Electric ball pump is designed with intelligent pressure sensing and stop function, just preset the right ball PSI, press to start and it will automatically stop inflating when the preset pressure is reached. Smart and easy to use. Accurate pressure adjustment: built-in digital pressure gauge and LCD display, you can preset a very accurate PSI to inflate your ball, and then you can get an accurate pressure level (PSI) in balls. Make it much easier to inflate balls without wasting time, you can focus, not on the ball but on the game Fast ball pump- Free your hands and save your energy: Air volume input: 4L/M, which completes the inflation of a ball in just 1- 2 minutes. You don't have to sweat to push or pull the manual ball pumps with your hands. Save more energy to beat your opponent Portable Compact Design: Size: 6.29*1.57*1.57 inch, Weight: 0.55 LB, fits in your bag, your trunk or even your pocket. Lets you take this mini pump wherever you need it to keep your balls inflated. With bright LED lights and backlit LCD screen, the ball pump is convenient to use at night or in dark places. Special Reminder: Our store has a 24-hour customer service team to respond quickly and takes the customer experience as the first standard. You can buy with confidence and welcome your arrival.