Features: 1. Solar charging, convenient to use, easy to install 2. Lighted font display, clearly visible in day and night, no polarization, wide viewing angle 3. 3 levels of brightness automatic adjustment, strong light can be seen clearly in the dark, soft light in the dark 4. Built-in 500mAh high capacity lithium battery is resistant to high temperature and can last battery life even without sunlight5. For general family car and can be charged during outdoor parking or during daytime riding 6. Battery power monitoring function, -Lo-" Low power reminder will display every minute until forced to turn off Temperature measurement Note: Temperature probe is on the back of the clock and measured temperature is host working environment temperature (center console temperature is usually much higher than average car temperature) Specifications: Product name: Solar car clock Display function: Time (12/4 time), date, week The temperature can be displayed either or multiple functions can be automatically displayed. Power mode: Solar powered, Micro USB power supply, rechargeable lithium battery power supply. Charging method: Solar charging/micro USB charging. Switch method: Press the bottom button for 3 seconds to automatically shut down and press the down button 1 time to turn on the power Installation method: Center console secures with double-sided tape in front of the windshield. Shell material: Automotive grade heat-resistant ABS material. Size: Length x Width x Part Height approx. 1 approx. 1 0.6 x 7 .3*2.3cm/4.17*2.87*0.91in) Package Contents: 1* Digital Car Watch 1* Manual Note: 1. Due to lighting effects and shooting angles, product color difference is allowed for manual measurement.