Features: 100% brand new and high quality 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 Ergonomic design comfortably fits hand and features a soft, non-slip surface for sure grip 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. Specifications: Four Measurement Ranges: PSI: 0-150, Bar,KPA,Kgf/cm2 Minimum Increment: 0.5 PSI Power Source: one CR2032 3V Lithium Coin Cell & three LR44 1.5V Button Cells. Package including: Digital tire gauge * 1 (batteries included,but no retail packing,we will pack it well before sending)