Solar power + USB charging, no need to charge by connecting the car lighterColorful, Clear LCD Digital Screen to display tire informationRear time control of pressure and temperature of 4 tiresLow air pressure / high temperature alarmHigh temperature / leak / low battery alarmSmart shock start when the car is moving, no need to turn on/off.Wireless connection by sensors, easy installation.More stable and accurateAnti High Temperate and ColdIP67 Protection/WaterproofHow to replace the External Sensor battery?1. Remove the dismantling gasket;2. Wrench the with a wrench;3. Remove the battery;4. Replace a new battery.Solar Charging I USB Charging I Low power consumption1: Tire Abnormality2: To Predict the Eak3: Tire Pressure Prompt4: Beep Prompt5: Solar Charging6: Waterproof And Dustproof7: Four Rounds of the Same Display8: Reduce WearTips:The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use.Please install in by Professional car centerWorking Temperature:-40-125Type:Build-in SensorColour:BlackMaterial:PlasticPackage Contents:1 x Tire Pressure Monitoring System4 x Sensor1 x USB CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.