Multifunction: Shows temperature inside and outside the car, battery voltage and time/date display, universally suitable for DC 12V / 24V vehicles. Powered by a cigarette lighter charger or 2 x LR44 batteries (included)2 button batteries are included The green/blue backlight can be switched to orange. 180 degree adjustable, easy to read with large LCD screen. Easy to install with double-sided tape. the outside temperature and the battery voltage of the tank. Universally suitable for DC 12V / 24V vehicles. Blue can be switched to orange. Alarm clock function: 5-minute alarm function. Measures temperature and can change the temperature display unit to Celsius/Fahrenheit. Display of the voltmeter of the car battery. Powered by a cigarette lighter charger or 2 LR44 batteries (included). The digital display shows the temperature in the car 12/24 hour system switchable Power cord length: 146 cm. Easy to install with double-sided tape. For the memory function, 2 button cell batteries are included. Universally suitable for DC 12V /24V vehicles Product size: 5.5 x 9.2 x 2.8 cm Base diameter: 4.5 cm Operating voltage: DC 12V /24V Temperature measurement range: - 10C~50C Material: plastic + electronic components Background color: Blue Base adjustment angle: 180 degrees. 1 x car thermometer digital watch 1 x temperature sensor cable 1 power cord