this be a great clock that keep excellent time and you have the ability to change the sound of you alarm use different sound card . I be very excite to listen to a variety of bird call and initially buy several sound card so I could rotate they . the drawback be that the alarm alway start off with the first bird call and never deviate . thus , if you hit the snooze immediately after the alarm go off as I do , you never progress to the other bird call . you have to let the alarm go off for a while to hear other call . the next time it go off again , it start right back from the first bird . would be great if it move on to bird # 2 the next time it go off , then bird # 3 , etc. . some of the bird call be more interesting than other and I be currently stick on the one with the loon in the first position . would love to hear the great egret , however , it be bird # 4 or 5 and I never let the alarm go off long enough to hear it -lrb- would wake my husband if I let it go off that long !! -rrb- .