Advantages of the product: The appearance is ergonomic, the tire pressure value can be quickly determined, the LCD screen is displayed, the reading is intuitive, and the test automatically keeps the current data for the test reading. product features: Measuring range: 2.0-99.5 PSI OR 0.15-7.00 BAR Introduction 1 Press the button next to power on, display the last test unit after power on, press “ON” button to perform unit conversion (PSI→BAR→KPA→Kg/cm2), and the unit change at the same time, the display value will be changed accordingly. 2 Align the nozzle of the pressure gauge with the valve of the tire and press it to ensure good contact between the nozzle and the valve. There is no leaking sound. After 3 seconds, remove the tire pressure gauge from the valve and read the exact tire. Tire pressure, the data is kept for 15 seconds. After the data is cleared, the pressure gauge is moved to other tires to continue testing. 3 The pressure gauge is turned on. If the button is not detected for 60 seconds, it will be automatically turned off. You can also press and hold the power button for 3 seconds to manually close it. Power supply: CR2032 3V button battery Product size: 143x45x23mm Standard configuration: bare watch (with battery inside), manual, certificate (warranty card) Packing description: Packing: single blister card