I buy one of these year ago in Rome when my expensive , multi-time zone , many feature digital fail miserably after only week . it work perfectly while the hotel operator that be suppose to give a slightly earlier wake-up call sleep . it work perfectly on trip thereafter and be a vital companion to make sure flight be make in time . simple , run on a single easily find aa cell for a long time and easily see at night with its glowing dial and hand . a perfect example of kiss ! after year of use I break it in Rio with a pre-dawn flight to catch by force in a rechargeable battery that may have be a bit out of shape in darkness . fortunately the operator in the airport hotel be on he toe though I sleep less soundly know my reliable little wake-up companion be ruin . I be very unhappy , not expect to find a exact replacement after the year . there be a big grin when I find Amazon have the exact thing and it sit ready to go among my travel gear . the old one reside in a little corner of a drawer with small `` memory '' of good thing . I get some of the first digital , multi-time zone , calculator watch when they come out in Japan so I know digital . I often like digital . this be the clock I depend upon to wake I for must make flight . the only thing that knock off a star for mechanic and construction be the fact replace a battery in less than ideal condition do break the original .