The Touch Screen Buttons Solar power charging, don't need to charge by connecting car cigarette lighter Colorful LCD Digital displaying, clear to show tire information Rear-time monitoring pressure & temperature of 4 tires Low air pressure/high temperature alar High Temperature / Leakage / Low Battery Alarm Intelligent Shock Boot when car moving, don't need to turn on/off Wireless connect by sensors, easy install External Sensor: Easy to install, convenient to replace Dust-Proof / Water-Proof / Anti-theft Anti High Temperate and Cold IP67 Protection / Waterproof Air pressure setting range: 0.1-8.0 BAR Temperature setting range: 60-80 Operating temperature: -20-125 Storage temperature: -30-85 Charging voltage: DC 5V Frequency: 433.92MHz20.00MHZ Colour:Black Material:ABS Package Contents: 4 * Car External Tire Pressure Sensors 1 * Display 1Set * Installation accessories 1 * Wire harness 1 * English instruction manual Only 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.