All of parts are High temperature Resistance---In Summer, indoor temperature of the car is up to 70℃.
The shell is PC Flame Retardant material, we fire it with lighter, not burnt & deformed. So, no worries in summer.
Power supply: Solar + Battery, Solar first while the sun is shining. We test without CR2032 battery, when the sun shines within 5 seconds, you can press the "+" key in the back, it'll be on. By the way, we provide CR2032 battery in equipment.
HD LCD---Big size,13 digits space for use, you can set "blank, - or any digit", no worries about long numbers.
Kindly reminder: Sticker should be stuck to the Co-pilot front glass, it can't influence driver's view. And not to the side car window, window is up & down, it blocks. If stick to the Co-pilot front glass, no need to take it off as usually. You can press "+" 3s in the back, it'll be On/Off.