No one wants emergencies but it's better to be safe than not at all. This Autowit Cordless Tire Inflator lets you quickly pump up any tire. The easy-to-read gauge with unit conversion (PSI/Bar/KPA) is convenient for you to preset the recommended pressure. Inflating will stop automatically once it reaches the desired air pressure in case of over-inflating. With 2 power sources, you can either use a Li-ion battery pack or a 12V car power adapter. This inflator also comes with 2 nozzles ideal for inflating cars, motorcycles, and bicycle tires. It could also be used to inflate lifebuoys, sports balls, inflatable boats, and other inflatables.