Description: Function: Digital Clock , thermometer, and voltmeter. The temperature measurement range is from -50°C to +70 °C, (The temperature can be switched to display °C/°F), the clock function with 5 minutes snooze function. The length of power cord is 1.5m. With voltage indication function, and date/time can be convertible to 12/24 hour format. Easy to Install: The base can be adjusted, and it comes with double sided adhesive, firmly attached to the car. LED backlight 2 color optional function, backlight will light up and time / temperature / will be displayed on the LCD screen when powered by the 12V car cigarette. If the backup battery is used for power supply (with 2 button batteries), no backlight, the LCD only displays the time. Specification: Temperature display resolution: 1 °C Temperature accuracy: ±1.0 °C Temperature measurement sampling period: 20 seconds Size Chart: Length: approx.9.3cm/3.66inch Height: approx. 6.8cm/2.68inch Thickness: approx. 2.5cm/0.98inch Base Diameter: approx. 4.5cm/1.77inch Package Includes: 1 Piece Car Digital Thermometer Clock Voltmeter Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!