Features: Date/Time, 12/24 hours can be switched to display. The double temperature function can also display the indoor, and outdoor temperatures. Voltage display function, always testing the voltage of the storage battery of the automobile, so as to avoid battery power loss, can not start the vehicle. The LCD backlight design allows you to accurately read the digits in the dark. Easy to install and use, a perfect accessory for your car. Specifications: Material: ABS Working Voltage: DC12~24V Measuring Temperature Range: -10~+50°C Temperature Accuracy: ±1.0°C Fitments: Universal Package Included: 1Set Car clock thermometer