Solar power charging, don't need to charge by connecting car lighter Colorful LCD Digital displaying, clear to show tire information Rear-time monitoring pressure & temperature of 4 tires Low air pressure/high temperature alarm 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 Freescale chip sensors and fit on almost 98% cars on market Type: Intelligent Solar TPMS Car Tire Pressure Solar power charging LCD displaying Adhere to windscreen for installation Operating frequency: 433.92Mhz +/- 50KHz Operating voltage: 3.7-5 V Working temperature: -20 -75 Pressure Range: 0-4.3 Bar Type: External Colour: black Material: metal + plastic Package Contents: 1 x host 4 x external sensors 1 x wrench 4 x anti-theft nuts 1 x English manual Only the above package content, other products are not included. Note: Light 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.