La Crosse Technology WT-3129B 12 Inch Atomic Analog Wall Clock, Black Remove the hassle and worry if your clock's time is correct, with La Crosse Technology's Atomic Wall Clock. This 12" 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 3 years. This convenient wall clock has a stylish black frame and an easy-to-read analog face. Its simple style will complement almost any room. Features Automatically sets to exact time Accurate to the second Automatically updates for Daylight Saving Time (ON/OFF option) 4 Time zones: PT, MT, CT, ET Simple Operation: Insert 1 AA Alkaline Battery (not included) or ADD 2 additional AA to extend battery life (up to 3 yrs) Accurate, atomic self-setting time date with automatic resets for Daylight Saving time Black plastic wide frame 4 Time Zone Settings Simple operation with 1 AA alkaline battery Accurate to the Second USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.