Motor Vehicle Sensors ~ Item Type:Mini Tire Pressure Gauge Material:PP Color:Black,Red,Blue,Green,Yellow Size:61*32*15MM Accuracy: +/-1 PSI Pressure test range: 3-150 PSI Battery:Included There are generally four measurement units of air pressure: psi, bar, kPa, kg/ c. The conversion relationship between them is: 1 bar =0.069 bar=6.9 kPa=0.07c 1 bar=14.5 psi=100 kPa=1.02 kg/ c 1 kPa=0.145psi=0.01bar=0.01kg/ c 1 kg/ c=14.22psi=0.98bar=98.07kPa Feature: -100% Brand New and High quality. -Increase fuel efficiency, environmental friendly gas-saving. -Keychain design, easy to carry. -Reduce tire wear extend tire life. -An essential item for monthly-tire-check. -Stop excessive tire wear with proper inflation. -Improves vehicle handling and safety. -Large LCD display for easy reading. -Perfectly fits the needs of travelers drivers. Instructions: Place the nozzle of the gauge over the tire valve. Press firmly to ensure good seal and prevent air escaping. Hold gauge on the valve until the reading on the LCD display locks. Remove the gauge quickly from the valve an read pressure. To retake the reading simply place the nozzle over the tire valve again and repeat. Package Included:1 Pcs*Mini Tire Pressure Gauge Note: 1.Due to the difference between different monitors, the pictures may not reflect the actual color of the item. 2.Compare the detail sizes with yours, please allow 1-3cm error, due to manual measurement. Have a great time shopping!