I unpack the clock right after receive it and although I read the brief instruction very carefully , I could not make the clock to ANYTHING accord to the step outline in the instruction . furthermore , I leave it overnight next to my window and when I get back to it the next morning , it have still not adjust the time automatically . overall , I could not use it either as a automatic or manually adjust clock . piece of junk ! my wife have another Timex alarm clock model , that in all honesty be not much better and should have be a warning . my old clock be a Seiko , and work nicely for 4 year until my 3 year old bang it against the floor .