This traditional-looking clock is housed in a brilliant polished brass case, lacquered to keep its shine for many years to come. The built-in antenna system will receive the WWVB signal from Fort Collins, Colorado, home of the Atomic Clock – the most accurate clock in North America. You merely insert a AA battery in your clock, select your time zone and then hang it on the wall. The clock will set itself to the exact time. Comes with mounting hardware, instructions, lifetime warranty, and fresh battery. Dial: 6-1/8”, Base 8-13/16”, Depth 1-7/8”.