Description:Features:Time / date display, 12 / 24 hour system conversion.Snooze function, snooze time: 5 minutes.Capable of switching temperature display unit Celsius / Fahrenheit degree.Pedestal 180-degree revolve.Car battery voltmeter.Powered by car cigarette lighter charger or 2 x LR44 batteries (included).Display accurate temperature readings in and outside of the car.The LED backlight design allows you to accurately read the digits in the dark.Easy to install and use, a perfect accessory for your car.Also has the function of freeze alert.Specifications:Base Diameter: 4.5cmMaterial: Plastic, glassPower: 0.6WPower cord length: Approx. 150cmTemperature sensing line length: Approx. 200Stand-by power: 2 x LR44 button cell (included)Temperature measurement range: -10 - 50 degreesTemperature display resolution: 1 degreeTemperature accuracy: Plus / minus 1 degreeTemperature measuring duration: 60 secondsFeatures: Portable, Quick readingDisplay Type: Digital LCD displayPower Supply: Build-in batteryMaterial : PlasticColor : BlackPackage weight: 0.17 kgProduct size (L x W x H) : 9.2 x 5.5 x 2.8 cm / 3.62 x 2.16 x 1.10 inchesPackage size (L x W x H) : 9.5 x 7 x 6 cm / 3.73 x 2.75 x 2.36 inchesPackage contents:1 x Car LCD Clock1 x Cigarette Lighter Charger1 x Sensor1 x Double-sided Adhesive Tape1 x Bilingual User Manual in English and Chinese .