Westclox Atomic clock 70026AX lcd alarm clock

The official standard for time keeping is the National Atomic Clock located in Fort Collins, Colorado. This atomic clock is operated by the National Institute of Standards amd Technology (NIST) and is accurate to within ten billionths of a second per day. The NIST constantly broadcasts the atomic clock time signal. This Westclox atomic digital clock ensures accuracy to a fraction of a second by automatically receiving and adjusting to the NIST atomic time signal daily. Features: Atomic split second accuracy, touch activated Blue backlight, month/date/day display, indoor temperature display, and DST (automatically adjusts). Requires 2 "AA" batteries (not included). Model #70026AX.