This car thermometer is constructed with durable material that features direction display in cardinal points as well as in numeric digits. It includes an LED indicator that flashes light and warns about the icy road conditions. This facilitates easy-to-set auto calibration. Good choice for you!                                    Features                New and high quality<br>    Digtial temperature display<br>    Blue back light maintaining 5 seconds<br>    With calendar display<br>    Normal time LCD display<br>    Can use the clip clamped to take the temperature on the air-condition (closed)， also can put it on the visor or instrumentdesk<br>    Indoor temperature display<br>    Celsius degree display<br>    Length: 8cm; diameter: 1.5cm<br>    Power: 2 x AG3 button cell batteries (included)<br>    Color: black and silver<br>                                                                                                Package Includes                1 x Digital Car Clock Thermometer with Backlight<br>    1 x Clip<br>    2 x Button Batteries<br>