Features : With quick connection, deflation function, air pressure measurement, etc. At the same time, it adopts liquid crystal LCD display, which has high precision and long service life. Material: aluminum alloy copper rubber Display mode: LCD digital display Unit of pressure: Four units can be switched PSI, KPa, Bar, Kgf/cm^2 Measurement range: 3~230PSI Measurement Accuracy: (3-100PSI)1PSI, above 100PSI2PSI; Operating Temperature: -10 to 50C Key function: switch key (left), unit switch key (right) Working voltage: 3.1V DC (with a pair of 1.5V 7 batteries) can be replaced; when the battery voltage is lower than 2.5V, the LCD battery symbol flashes Operating current: 3MA or less (with backlight); 1MA or less (without backlight) Quiescent current: 5UA Hose length: 36 cm / 14.0 inches Batteries: 2 AAA batteries (not included) Application: suitable for most cars, trucks, motorcycles and bicycles. Cast aluminum alloy body with valve Brass clamp with clip Locking device built-in decompression to reduce pressure Measures tire pressure from 0 to 230 psi Display of KGF, BAR, PSI, KPA measurements LCD screen with backlight for easy reading Control handle with pistol grip Cast aluminum handle with valve Portable size, perfect to put in the car, easy to use Suitable for most cars, trucks, motorcycles and bicycles how to use: 1. Unscrew the tire valve knot. 2. Attach the copper head of the gauge to the valve 3. The device will display the pressure. 4. You need to find an air pump and an air tube to connect the air nozzle, hold the handle of the product to inflate it through the inflator, and vice versa when the pressure is low. 5. After the measurement is completed, unscrew the copper head and press to release the air, so that the indicator is at 0. Quantity delivered: 1 piece