Tire pressure gauge accurately measures your tire pressure with little effort. Just attach it to the tire's air valve and the exact measurement will show instantaneously. Poorly inflated tires wear faster and unevenly and negatively impact the vehicle's braking and handling. Improving your car's performance is essential for your driving experience. The tire gauge does not require batteries, so it's ready for use anytime. Protected by a rubber shield, it's durable and made to last under all weather conditions. Features: 1. Use the pressure recommended by the vehicle manufacturer, please do not exceed the "Maximum Pressure" number on the tire sidewall. 2. Check the pressure after the tire is cold and has been left for at least an hour. 3. Remove the inflation valve cover, firmly fit the mandrel of the pressure gauge on the tire valve stem, and flatten it. If air escapes, apply more pressure until air stops escaping. 4. Remove the pressure gauge from the valve stem to read the tire pressure. 5. If the tire pressure is too high, reinstall the tire pressure gauge on the valve stem, and then gently press the pressure release button until the recommended pressure is reached. 6. If the tire pressure is low, inflate to the recommended pressure and check again. 7. Store tire pressure gauges in a safe, dust-area. method: Step 1. Expose the sphere directly to any bright ambient light source for at least ten seconds. Common sources: flashlight apps, interior lights, headlights, Sun, tire inflators, etc. Step 2. See for yourself The dial will remain illuminated for fifty minutes, making it easy to use in low light conditions Note: Due to the cold weather, the air pressure value is slightly deviated, which is a normal phenomenon Notice: Due to different lighting and screen settings, item colors may vary slightly from the pictures. Due to the difference in manual measurement, please allow 1-2cm difference in size. List: 1*Tire Pressure Gauge See more product details 1.Maintains Good Performance for YearsPerformance is tested, certified and calibrated to meet or exceed ANSI B40.1 standard accurately (1.5%), ensuring accurate tire pressure readings and good performance for many years without relying on batteries. 2.Highly AccurateA highly calibrated car tire pressure tester accurate to 1% of full scale in the 60 PSI range will ensure your tires are in good hands 3.Improve SafetyProperly inflated tires provide better performance in all weather conditions, reducing the likelihood of punctures, explosions and crashes; saves oil costs and tire wear 4.Easy to ConnectThe tire pressure gauge includes a rotatable valve connector for easy connection and use, and a swivel on its shaft for maximum convenience. 5.Durable MaterialTire pressure gauge is made from high-quality, durable stainless steel and brass components for long-lasting performance; suitable for all vehicles.