Atomic Wall Clocks Automatically Adjust to DST
Always accurate Atomic Wall Clocks run on AA batteries for approximately two years before needing replacement. Both models are accurate to 1/10,000 of a second. A controlling radio signal from NIST in Boulder, Colorado automatically adjusts to precise time, daylight savings, leap year, and leap seconds (corrections for the earth's rotational "wobble"). Both come with a certificate of traceability to NISTstandards.
Digital Atomic Wall Clock displays time in a.m/p.m. or 24-hour time, plus month, date, day-of-the-week, and ambient temperature in Fahrenheit or Celsius (23° to 122°F and -5° to 50°C with 0.5 resolution). Large 2-1/4"H digits are visible from 20'. Measures 8-3/4"W x 9-3/4"H x 3/4"D. Weighs 1.1 lb. Includes wall mount, screw and two AA batteries.
Analog Atomic Wall Clock has a bright, highly visible second hand. Measures 12" dia. x 1-1/4"D. Weighs 1.4 lbs. Includes wall mount, screw and one AA battery.