Available exclusively from Hammacher Schlemmer, this is the oversized outdoor wall clock that maintains its unerring accuracy from the atomic radio clock transmitter in Fort Collins, Colorado. In addition to subtly glowing hour and minute hands, four LEDs illuminate the face when its light sensor indicates dark conditions—features only available in this model. Its analog display uses 2 3/4"-high Roman numerals, allowing you to easily read the time from up to 30' away in the daytime. A thermometer integrated into the face indicates the temperature while an adjacent hygrometer provides the relative humidity. Providing accurate time across the entire lower 48 United States. Weather-resistant antique bronze finish. Requires one AA battery (radio receiver) and four D batteries (LEDs). 24 1/2" Diam. x 3" D. (9 lbs.)