Features: Four Measurement Ranges: PSI: 0-150, Bar,KPA,Kgf/cm2 Minimum Increment: 0.5 PSI Lighted nozzle and display screen for ultimate visibility in low light or at night Digital display instantly and clearly shows exact reading, eliminating the guesswork of analog gauges Nozzle seals to valve stem for quick and accurate measurements Simple pushbutton control turns unit on and selects the desired range Automatically shuts off after 30 seconds to save battery life How to operate the digital tire gauge: 1. Press switch and select PSI or BAR setting with LCD back light for easy use at night. 2. Place the nozzle of the gauge over the tire valve. Press firmly to ensure good seal and prevent air escaping. 3. Hold gauge on the valve until the LCD display locks. 4. Remove the gauge quickly from the valve and read pressure. 5. Gauge will automatically shut off 30 seconds after use. 6. Gauge can be manually turned off by holding the switch down for more than 3 seconds. Power Source: 3 x AG13 batteries (Included) NOTE 1.As different computers display colors differently, the color of the actual item may vary slightly from the above images. 2. Please allow 1-3 CM differs due to manual measurement. Thanks for your understanding. Include: 1 x Digital tire gauge