This radio-controlled Accurite wall clock will always be accurate to the second. Its simple design with standard numerals, white face, and modest black plastic frame is always in good taste. It automatically receives and synchronizes to the WWVB time signal in the U.S. Just install the batteries, set your time zone, and the clock takes care of itself. It is 14 inches in diameter, and runs for over a year on one size AA battery (included). SW 4 lbs.