Coolwave 12V DC automotive air pump equipped with a variety of preset modes, a multi-purpose, all-round inflation. It can be used for car tires, motorcycle electric vehicle tires, swimming ring, sphere inflation, open the era of fast charging, easily meet various inflation needs. Even in the cold and heat, it can be easily started. It can manually adjust the pressure value from 3psi to 150psi to accommodate various inflatable objects. The car tire inflator is equipped with 4000mAh rechargeable battery and built-in safety protection design to prevent overcurrent and overcharge. In the charging process, without your constant care, pre-set the tire pressure in advance, and automatically stop after full. Its operation does not require additional power supply and is very convenient. The 30 cm long air pump rope is long enough to easily reach the front and rear tires of the car. The car's portable tire pump is designed to be easy to carry and weighs just 1.2 pounds, which can be carried in pockets, backpacks, in the car, etc. In addition, the car air pump has three LED lighting modes, respectively, steady lighting, warning light and SOS, three lighting modes can be switched at any time, when necessary to protect people's personal safety. The built-in USB output interface can also be used as an emergency power supply, which is more convenient for driving or riding.