Features: 1.Excessive pressure inside the tire will shorten the life of the tire and even cause tire rust. Too low air pressure will increase the mileage of the car. If you want to extend the service life, reduce the burden on the vehicle and enjoy comfortable and smooth driving, then the tire inflation pressure gauge can allow you to adjust the tire pressure at any time. 2.The accuracy is within 1 PSI, and the tire pressure gauge supports a maximum of 200PSI, and has 4 optional units, PSI, BAR, KG /CM2, KPA, and is widely used, from bicycles to heavy trucks. 3.High?end digital chip and LCD display, the test is more accurate, the rubber shockproof protective cover can effectively protect the instrument and ensure its long?term use. 4.Backlit display, just press the power button to turn it on, select the desired range, and the pressure relief button is used to precisely adjust the pressure on the tire valve. 5.Processed with high?quality materials of rubber and metal, wear?resistant, high?temperature resistant, and have a long service life. Specification: Item Type: Tire Pressure Gauge Material: Rubber+Metal Display Mode: LCD digital display Pressure Unit: 4 units can be switched, PSI, KPa, Bar, KG /CM2 Measuring Range: 3-200PSI/14BAR/14Kgf/cm2 Measurement Accuracy: (3-100PSI) 1PSI, over 100PSI 2PSI Working Temperature: -20-80 Key Functions: Switch key (left), unit switch key (right) Working Voltage: DC3.1V (using a pair of 1.5V AAA batteries) can be replaced when the battery voltage is lower than 2.5V, the LCD battery symbol flashes Battery: AAA battery 1.5v (battery not included) Number of Batteries: 2pcs Application: Motorcycles, cars, small and medium passenger trucks How to Use: 1.Please measure the tire pressure when the tire is cold. 2. Use the tail end of the tire pressure gauge to press the tire valve tightly, that is, the number will display the highest value. 3. Please keep the front vertical direction to measure the pressure with the tire pressure gauge, and read the tire pressure. 4. Please check the tire pressure value (refer to the description of the car for this pressure value) and keep the tire pressure correct. 5.After the reading is completed, please press the pressure relief valve to let the pressure in the pressure gauge drain. 6. After the measurement, re-lock the cover on the tire valve. PackageList: 1 x Digital Pressure Gauge 1 x Valve Core Wrench 4 x Tire Cap 4 x Copper Valve Core