It displays both ℃ and ℉. Classic and minimalist design. Measures water temperature in automobiles. High sensitivity and easy to operate. Adds a vintage look and feel to your vehicle, high quality and lightweight. Compatible with all 12V car models. SPECIFICATIONS: Mounting Diameter: 2 inches (52mm) Max Diameter: 2.2 inches (57mm) Sensor Port Thread Size: NPT 1/2, NPT 1/4, NPT 3/8 Units: Fahrenheit & Celsius Display Range: 130-280°F & 50-140°C Working Voltage: DC 10-15V (12V) Fitment: Universal for most 12V vehicles Wire Length: 1.8 meters Note: Installation guide not included. Professional installation is recommended. Please verify compatibility before purchase. Product design may vary slightly between batches, including minor color or appearance differences, which do not affect functionality. Color: As shown Material: Plastic Package Contents: 1 x Water Temperature Gauge Other items not included. Note: Lighting and display settings may cause slight color variations between the image and the actual item. Measurement error allowance: +/- 1-3 cm.