Align the pressure tap with the tire, and then squeeze it hard to keep the air tight. The tire pressure gauge will automatically display the reading. Measure tire pressure, gently press the power button, four units intelligent switch: 0-150psi, 0-10bar, 0-10kg / cm² , 0-1000kpa. Direct repeated measurement, no need to shut down to zero, standby 30 seconds automatically shut down or long press shutdown. Used for measurement of cars, bicycles, balls, rubber boats and other products. It has a wide range of applications and gives you a safe and healthy journey. Non-slip texture makes it easy to hold onto and the ergonomic design is both suitable for men and women's hands. Gauge automatically resets when taking pressure, no need to calibrate or reset the device.