Features 1. Large LED screen accurately displays time, providing convenient and practical use. 2. Displays both indoor and outdoor car temperature simultaneously. 3. Measures temperature range from -50 ℃ to 70 ℃ for both interior and exterior environments. 4. Switchable 12-hour or 24-hour time format display. 5. Activates ice warning indicator when temperature falls below -1 ℃. Specification Item Type: Automobile Thermometer Material: ABS Battery: CR2032 Button Battery (Not Included) Fitment: Universal Measurable Temperature Range: -50 ℃ to 70 ℃ Size: Approx. 108 x 80 x 42mm / 4.3 x 3.1 x 1.7in Package List 1 x Automobile Thermometer 1 x Instruction Manual Usage 1. When the outside temperature is between -1 ℃ and 4 ℃, the ICE display activates, indicating low external temperature. Exercise caution regarding vehicle anti-freeze measures. 2. Use the side switch to toggle between blue and orange backlight colors. 3. If the display malfunctions due to external factors, remove the battery briefly and reinsert it after a short delay, or use a fine object to press the "RESET" button for reset. Time Setting 1. In normal TIME mode, press and hold the TIME button for 3 seconds until 12Hr or 24Hr begins to blink, entering TIME setting mode. Use UP or DOWN buttons to select 12-hour or 24-hour format. 2. Press TIME to cycle through settings: 12/24 hour – seconds – hours – minutes – year – month – date – confirm and exit. 3. Use UP or DOWN buttons to adjust values. 4. In normal TIME mode, press TIME once to switch to month and date display. 5. Hold the button for 3 seconds to switch between °C and °F. 6. Press and hold for 3 seconds to enable or disable the freezing alarm function (snow icon appears when enabled).