[Automatic Electric Ball Pump]Electric Ball Pump with intelligent pressure detection and stop function,just preset the correct ball PSI, to start and it automatically stop inflating once the preset pressure is reached. Smart and easy to use. [Fast Ball Pump-Free Your Hands and Save Your Energy]Air volume input: 4L/M, which finishes inflation of a ball in just 1-2 minutes. No need to be sweating for pushing or pulling those manual ball pumps with your hands. Saving more energy to beat your opponent. [Accurate Pressure Alignment] built-in Digital Pressure Gauge and LCD Display, you can preset a very accurate PSI to inflate your ball ,and then you could get an accurate level of pressure (PSI) in balls. Makes inflating balls much easier without wasting time, you can focus, not on the ball but, on . [High-capacity Battery]Electric ball pump with 2000mAh rechargeable battery, inflate 30 balls on one charge, come with Micro-USB charging cable, about 120 minutes to full . [Portable Compact