- updated 2 years ago
This Clock is accurate to within 10 billionths of a second per day! It automatically adjusts via radio controlled signals from Ft. Collins CO the home of the official U.S. National Atomic Clock. Sharp Tech See Through LCD Wall Clock Features: * Totally accurate * Automatically adjusts time and daylight savings * Never needs setting * Unaffected by power interruptions * 4 time zone settings * Displays month day date and year * Shows room temperature * Uses 1 AA battery (not included) * 11 3 4" diam. x 1"d.