original review 2007 : what a great surprise ! I order this simply to have a clock in the bedroom that could be read in the dark without glass ... and that be exactly what I get , but much much more ! I plug this guy in and it show the correct time ! check the instruction pamphlet -lrb- actually print large enough to read ! -rrb- and find that this clock will automatically keep up with the correct time and automatically reset for change to daylight savings and back ! this be great for I because we have a lot of clock and get they all change twice a year be a real chore ... especially the one that require two button push at once or whatever . I have be buy expensive atomic clock simply to get rid of this problem , but this one be MUCH better than a atomic , where you have to diddle with get good reception and then wait while it update ... sometimes overnight ! this little guy be program for all time zone , just flip a well label switch on the back to select yours ... not a menu , a good old switch that you just have to change one time ! what a great invention ... I hope all clock will adopt this system . no worry about power outage , no problem if you be move ... just unplug it and plug it in at you new location ... it keep time while it be unplugged ! and as far as be readable in the dark , the number be so big it be almost scarey when you look at it at night ... 10 star ! I 'll get back with a update if I discover any problem or failure . update after one year of use . 1 . this clock have never fail to show the correct time and have never fail to alarm properly , even in my rural area where power blip be a norm . 2 . one reviewer say there be no way to change the time if it be wrong ... that be INCORRECT ! 3 . one reviewer can not figure how the clock know what time it be ... well obviously it be set initially in the factory ... but probably the reviewer be just joking . it be set up and maintain its setting with a small battery which be rate `` up to 5 year '' durability . 4 . another reviewer pull the battery and say this ruin he clock ... can not imagine why he would pull the battery in the first place , but I do know there be instruction for do this . do note that the clock itself be the plug-in type ... it only use the battery to power the memory\/setup chip . after a year of use , this be still my favorite clock and I get mad every time I have to change battery on my atomic clock because they be such a hassle and I pay over twice as much for they . this be the one to buy . I be look for Chaney to come out with one that can show I the outdoor temperature as well and I 'll scrap all my junky atomic .