EASY TO USE: Displays inside and outside temperature from -58 to + 158 fahrenheit FITMENT: Bell Automotive's Inside-Outside Thermometer and Clock is ideal for cars, trucks and vans, SUVs, boats, and more. INCLUDES: Mounts with hook and loop tape (included). Uses one AAA battery (included) DIMENSIONS: Inside-Outside Thermometer and Clock measures approx 6.46 x 5.39 x 1.22 inches BEST CHOICE: Express yourself in style with our fashionable, functional, and innovative license plate accessories. Enjoy your ride!