FAST INFLATING & EASY OPERATIONWith maximum pressure 150PSI and air flow 25L/min, Plug portable air compressor power cable into the car's 12V power outlet, then press the inflation nozzle into the tire valve, set the pressure value required by thetire and press the switch to start inflating. The auto tire air compressor can Inflate the standard 195/55/R15 car tires from 0 to 35PSI in 5 minutes. AUTO SHUT OFFUse the "R" button to preset the required pressure unit, and then press the "+" and "-" buttons to set the desired pressure. The air compressor pump will automatically shut off when reaching the preset tire pressure, worry-free about verinflatedor underinflated anymore. (Please make sure the preset pressure is higher than the current pressure of the tires.) AC/DC OUTLET & MULTI-PURPOSEThe tire inflator compatible with all vehicles (>3.5 Bar)with DC-12V cigarette lighter power outlet, come with 3 nozzles, 1 extra fuse and 9.84 ft power cord, which makes it perfect for cars, SUV, ATV, motorcycles,bicycles, inflatable boats and other inflatables. (NOTICE: NOT SUPPORT FOR HEAVY DUTY TRUCK OR TRACTOR TIRES) DIGITAL DISPLAY & LED LIGHTINGBright LCD display makes for convenient use at night or under strong sunlight. The air pump is equipped with long-lasting LED lights, to help you be ready for nighttime emergencies. The air compressor gauge can displaythe pressure in PSI, BAR, KPA or KG/CM. Products from NIUNIU's store