Solar power + USB charging, no need to charge by connecting the car lighter Colorful, Clear LCD Digital Screen to display tire information Rear time control of pressure and temperature of 4 tires Low air pressure / high temperature alarm High temperature / leak / low battery alarm Smart shock start when the car is moving, no need to turn on/off. Wireless connection by sensors, easy installation. More stable and accurate Anti High Temperate and Cold IP67 Protection/Waterproof How to replace the External Sensor battery? 1. Remove the dismantling gasket; 2. Wrench the shell with a wrench; 3. Remove the battery; 4. Replace a new battery. Solar Charging I USB Charging I Low power consumption 1: Tire Abnormality 2: To Predict the Eak 3: Tire Pressure Prompt 4: Beep Prompt 5: Solar Charging 6: Waterproof And Dustproof 7: Four Rounds of the Same Display 8: Reduce Wear Tips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color