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 includedThe 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 car12/24 hour system switchablePower 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 vehiclesProduct size: 5.5 x 9.2 x 2.8 cmBase diameter: 4.5 cmOperating voltage: DC 12V /24VTemperature measurement range: - 10C~50CMaterial: plastic + electronic componentsBackground color: BlueBase adjustment angle: 180 degrees.1 x car thermometer digital watch1 x temperature sensor cable1 power cord