Remove the hassle and worry if your clock's time is correct, with La Crosse Technology's Atomic Wall Clock. This 16" self-setting, radio-controlled analog clock automatically sets to the exact time and keeps it accurate to the second. It has four time zone settings, and it automatically updates for Daylight Saving Time (on/off option). Operating this wall clock is easy. Simply insert one AA alkaline battery into the clock. After the signal is received, press the Time Zone button to set your time zone. Use the manual reset button if you need to readjust the clock, if you are outside the 2,000 mile distance from the signal (located in Fort Collins, CO.) Convenient extra battery compartment for two additional AA batteries to extend the clock's power up to 5 years. Solid metal construction with its 2 In. deep frame and white dial, its simple style will complement almost any room.