Fast Auto Inflation - Automatically shuts off when full, preventing over inflation or under inflation. Inflation efficiency: 2 minutes for 1.95 MTB tires, 5-6 minutes for car tires. This product does not contain batteries Equipped with 3 kinds of needles and a hose for quick connection, you don't have to worry about the connection process . Everything plugs in easily and works with a variety of equipment: cars, motorcycles, bicycles, air mattresses, canoes, swimming rings, soccer balls, basketballs, etc. < p>Simple and practical design - easy to carry, the LED on the top of the pump can be used as an emergency light. Function of protection: 1. When the air pressure value <20KPa is detected, the device will automatically shut down after 2 minutes. 2. Air pump overheat protection when inflating: When the temperature exceeds 100 degrees, the inflation will stop and the LCD screen displays "HOT". When the temperature drops to 60 degrees, it continues to expand. 3. Charging and discharging voltage protection, 12.8V charging protection, 9.6V low battery. 4. Power display, the battery symbol on the LCD screen indicates the power. Note: Since the size is measured manually, there will be an error of measures 1-3cm. Due to different monitors, there may be some differences between the real object and the picture, please understand < p> Package Contents: 1 Portable Air Compressor