Automatic Electric Ball Pump: The electric ball pump is designed with intelligent pressure sensing and stop function, just preset the correct PSI of the ball, press to start, and it will automatically stop inflating once the preset pressure is reached. Smart and easy to use.Accurate Pressure Alignment: With built-in digital pressure gauge and LCD display, you can preset a very accurate PSI to inflate the ball, and then you can get the precise pressure level (PSI) on the ball. It makes it easier to inflate the ball without wasting time, you can focus on the game instead of the ball.Fast Inflating Ball: Free your hands and save energy Input gas volume: 4L/M, it only takes 1-2 minutes to complete the inflation of one ball. No need to push or pull these manual pumps laboriously by hand. Save more energy to beat your opponentPortable and compact design: Size: 6.29 x 1.57 x 1.57 inches, weight: 0.55 pounds, suitable for your bag, boots or even pocket. Allowing you to carry this mini pump with you, you can keep your ball inflated wherever you need it. Features a bright LED light and backlit LCD screen, making it convenient to use the ball pump at night or in dark places.