Marathon CL030033WD Commercial Grade Panoramic Atomic Wall Clock with Table Stand - Wood Grain Tone - Batteries Included LARGE DISPLAY - Easy to read 4" high display SELF-SETTING/ADJUSTING - Using radio frequencies broadcasted from NISTs Colorado Atomic Clock MULTIPLE DISPLAY MODES - 12 or 24 Hour Display Formats with Indoor Temperature Display in Celsius or Fahrenheit 8 TIME ZONES - A Marathon exclusive, choose between PST, MST, CST, EST, AST, NST, HST & AKST with option to turn Daylight Savings Time on or off BATTERIES INCLUDED - 2 AA long life batteries included