Drivers, this CARTMAN tire inflator is one of those tools you don't realize you need until you have a flat tire at the worst possible time! The 12V DC power plugs right into your car's cigarette lighter, and it's powerful enough to inflate a 195/55/R15 tire from 0 to 30 PSI in under 3.5 minutes. The digital pressure gauge is super accurate (within 1% of actual pressure) and lets you switch between PSI, kPa, BAR, and KG/CM units with one button. The auto shut-off feature is brilliant - just set your desired pressure, start inflating, and it automatically stops when it reaches that exact pressure. No more guessing or over-inflating! It comes with two nozzles and an extra fuse, so you can inflate car tires, SUV tires, motorcycle tires, bicycles, sports balls, air mattresses, and even balloons. The preset function with up/down buttons makes it easy to get exactly the pressure you need every time. Keep this in your trunk and you'll never be stuck with a soft tire again - it's saved me multiple times already!