this clock be a joke . they say it update with atomic clock . what they do not tell you be that it only do it every 2-3 day . so there go the whole big deal about it set itself or be accurate . if you need to replace the battery it will be day before you have the right time again . also no manual and no toll free telephone number mean I spend more on long distance call to find out why the clock be not work than what I originally pay for the clock . and the people at Equity Time USA give the word rude a whole new definition . the first customer person service person actually hang up on I because she be confuse . all and all stick with the clock you already have on you wall , I wish I would have .