It displays both ℃ and ℉. Classic and minimalist design. Used to measure the water temperature of automobiles. High sensitivity and easy operation. Adds a vintage look and feel to your vehicle, with high quality and lightweight construction. Fitment: Compatible with all 12V car models. SPECIFICATIONS: Mounting Diameter: 2 inch (52mm) Max Diameter: 2.2 inch (57mm) Sensor Port Thread Size: NPT 1/2, NPT 1/4, NPT 3/8 Unit: degree Fahrenheit & degree Celsius Display Range: 130-280°F & 50-140°C Working Voltage: DC 10-15V (12V Professional) Fitment: Universal fit for most 12V vehicles Wire Length: 1.8 meters Note: Installation guide not included. Professional installation is strongly recommended. Please verify compatibility to ensure the item meets your needs. Product updates may occur across different batches, resulting in slight variations in appearance or color, which do not affect functionality. Color: As shown Material: Plastic Package Contents: 1 x Water Temperature Gauge Note: Light reflection and differences in display screens may cause slight color variations between the product image and the actual item. Measurement error allowance is +/- 1-3 cm.