Specification: Item Type: Tire Air Pressure Gauge Material: Metal and rubber Color: Red Display Mode: LCD digital display Pressure Unit: four units can be switched, PSI, Mpa, Bar, Kgf/cm^2 Measuring Range: 3 - 300PSI/14BAR/14Kgf/cm^2 Operating Temperature: -20℃ - 60℃ Key Function: On-Off key (left), unit switch key (right) Battery Type: CR2032 Battery Capacity: 210mAh button battery (shipped with built-in battery) Fitment: Motorcycles, cars, small and medium-sized vans, etc How to Use: 1. Unscrew the knot of the tire valve. 2. Fix the copper head of the instrument to the valve. 3. The device will display the pressure value. 4. You need to find the air pump and the air tube to connect the air nozzle, and hold the handle of the product when the pressure is low, and inflate it through the inflator, and vice versa. 5. After the measurement, unscrew the copper head and press the vent button to make the indicator value 0. packing list: 1 x Tire Inflation Tester 4 xAir Nozzle 4 x Air Cap 1 x Cross Quick Air Nozzle