Feature :1. Save gas / extend tire life with correct preure2. Easy to read LCD display, Super size mini car shaped displayItem Describe:1. 100% Brand New and High Quality2. Type : Keychain digital tire preure gauge3. Material: ABS4. Size: About 6 x 3.3 x 1.5cm5. Color: Black6.Power: 3 V lithium battery CR-20257. Powered By: lithium cell battery (included)Function :1. Four units: PSI / Kpa / Bar / kg / cm22. Range: 2-150psi or 0.15-10.0bar or 15-1000kPa or 0.15-10.0 kg / cm2Four unit modes:1. "ON" start button2. "ON" can be changed by preing 4 units continuously3. "ON" long pre for 5 seconds to turn off4. No operation within 30 seconds will automatically shut downOperational matters needing attention:Measure the tire preure after the tire has cooled.Align the valve of the tire preure gauge with the tire preure of the car tire (remove the valve cap), and make sure that you can't hear the "si si" air leak.Hold until astable measurement value is displayed. Quickly remove the tire preure gauge and read the data.You can follow the instructions above to measure.Pre and hold the button for 3 seconds to force shutdown.The measured value will remain for about 90 seconds and then disappear automatically.Package include:1 x Digital Tire Air Preure TesterNotes:-Due to the light and screen setting difference, the item's color may be slightly different from the pictures.-Please allow slight dimension difference due to different manual measurement.