Measuring range: 2.0 to 99.5 psi or 0.15 to 7.00 bar Introduction to use: 1. Start by pressing the "ON" button, the previous test unit is displayed after startup, the unit can be converted by pressing the "on" button (PSIBARKPAKg/cm2), and at the same time the unit is changed at the same time, and the displayed value during testing changes accordingly. 2. Align the nozzle of the pressure gauge with the tire valve and press it firmly to ensure that the contact between the nozzle and the valve is good and that there is no air leakage with the hip-hop. 3 seconds later, remove the tire pressure gauge from the valve, read the accurate tire pressure, and hold the data for 15 seconds. After deleting the data, move the pressure gauge to the other tires to continue testing. 3. If the pressure gauge is open, if it does not detect the ON button for 60 seconds, it will automatically turn off. You can also press the "on" button for 3 seconds and close it manually. Power supply: CR2032 3V button battery Product dimensions: 148x39x31mm Color: Black Delivery quantity: 1 unit Note: Other items are not included here, other pictures only show the effects. Due to differences between monitors, the image may not reflect the actual color of the product. Products are measured manually, please allow the error, thank you!