1. Digital tire pressure gauge, easy to calibrate the pressure, it can display the test value of 2‑3s. 2. Four pressure units can be switched: PSI, KPa, Bar, Kgf/c㎡, which can meet different needs. 3. LCD digital display, high definition, allows you to read data clearly even in a dark environment. 4. If there is no operation within 15 seconds, it will automatically shut down to save battery power. 5. When the tire pressure is extremely high, the bleed valve helps to vent the air. When the air pressure is too low, all you need to do is connect the air compressor and press the inflation button. Specification: Item Type: Tire Pressure Gauge Material: Aluminum Alloy, Copper, Rubber Display mode: LCD digital display Pressure Unit: 4 units can be switched: PSI, KPa, Bar, Kgf/c㎡ Measuring Range: 3-300PSI/14BAR/14Kgf/c㎡ Measurement Accuracy: (3-100PSI) ±1PSI, over 100PSI ±2PSI Working Temperature: -20 to 60°C Key Functions: On/off key (left), unit switch key (right) Working Voltage: DC3.1V (use a pair of 1.5V No. 7 batteries) can be replaced when the battery voltage is lower than 2.5V, the LCD battery symbols flashes Battery: 2 x AAA battery, 1.5v (not included) Working Current: ≤3MA or less (with backlight); ≤1MA or less (without backlight) Quiescent Current: ≤5UA Scope Of Application: Motorcycles, cars, small and medium passenger trucks, etc. Package List: 1 x Tire Pressure Gauge