HIGH PRECISION - High-end digital chip, more accurate, more reliable and cost-effective testingAUTO ALARM - Wide measuring range 0-200psi. Accuracy up to 0.05Bar. When the tire pressure exceeds the normal pressure, it can trigger automaticallyUNIVERSAL FITMENT - 4 tire pressure units can be shown: PSI, BAR, Kgf / CM2, MPA; Widely used for many tires of cars, trucks, motorcycles, bicycles, etcSUPER FUNCTION - Used to monitor tire pressure, extend tire life and ensure safety; Made of high quality brass material, lustrous, durable and corrosion resistanceCLEAR READING - LCD screen digital display, you can read the data clearly day or night; Compact size, easy to keep in the car and simple to use