Heat Resistant Shell: The shell of the car clock is made of high temperature resistant material, which makes the clock suitable for the internal environment of the car, without worrying about summer eSolar Powered Design: The car clock features Three kinds of mode supply power: solar-powered, MicroUSB rechargeable lithium battery power supply. And built-in 500 mAh large-capacity lithium battery, Larger-capacity battery improves battery life when there is no sunlight. It just needs pasted and fixed without wiring.Brightness Adjustment: The car clock features the high temperature LED digital tube display, daytime and nighttime are clearly visible, with automatic brightness adjustment, soft at night, bright in the sun.Shading Hood Design: The design of the hood can effectively reduce the interference of strong light during the day, at night, the car clock can prevent the LED light from being projected on the front windshield, which does not affect the driving.