La Crosse Technology Lacrosse Technology WT-8005U - 9-Inch Digital Atomic Wall Clock

This digital clock displays the time on a large LCD and also features the month and day, indoor temperature, and alarm clock. Hang it on the wall or use the stand to place it on your desk. Requires 2 AA batteries. Radio-controlled (or "atomic") clocks set themselves automatically by tapping into the time signal broadcast from the cesium fountain clock located in Boulder, Colorado. Accurate to 1 second every 80 million years, the atomic clock signal is broadcast over North America by the National Institute of Standards and Technology. Please note, radio-controlled clocks may have difficulty finding the NIST signal in Alaska, Maine and parts of Canada.