Lantoo Mini Keychain Digital Tire Gauge Can Detect PSI BAR KPA,Portable Digital LCD Air Pressure Tester Measurement Tool with Hook and LCD Display for Cars, Trucks, Motorcycles and Bicycles The Lantoo mini digital tire gauge with easy-to-read LCD screen is used to monitor your tyre pressure at every moment, thereby extending tire life, increasing fuel efficiency and ensuring your safety Small portable design, easy to hold and operate,quick measuring PSI BAR KPA , reliable to use EASY TO USE: Simple One Button Design to Power on and Select Mode The car Air Pressure Tester Tool with LCD Display Screen for easy reading even in the dark Forgot to turn off When you finished the measure job,wait for 1 minute to turn off automatically