Radio Controlled Clocks are clocks with amazing modern technology that automatically sets the time (hours, minutes, and seconds) on a daily basis to the exact time! Features: *Select from four time zones: Pacific, Mountain, Central, or Eastern *Simple Operation - One AA Battery, press time zone, and wate for WWVB signal reception. *Will receive signal throughout continental US and most of Canada. *Includes manual set tab. Post Office Style Wall Clock comes in Cherry finished Alder wood case. Dimensions: 16.5" x 2.75".