Digital display to detect tire pressure and test tire pressure at any time to avoid emergencies. The temperature difference between the four seasons is large, and the tire pressure needs to be regularly checked and adjusted. Too low or too high tire pressure can create a safety hazard. For example, the tire pressure caused by accidentally running is insufficient, and emergency inflation can help you get out of trouble. The high-precision die-casting alloy cylinder can be pressurized to 150 psi to meet the necessary aeration force for road bikes, as well as to inflate common bicycle tires, football, car tires, motorcycle tires, etc. Small and comfortable to wear. Powerful, compatible with a variety of nozzles, can be charged with a power bank. A wonderful journey is fully prepared, so riding and driving became easy and ready to go.