OM-

As I get older, I can't hear most alarm watches. My wife tells me when they are beeping!

BUT- I have had excellent results with my Suunto Core watch/altimeter/etc. I put the watch in my shoe near my head when I sleep, it has always managed to wake me up. It is easy to set the alarm. The watch is rather large, but it is a watch and not something else. It is the only watch of many watches I have that will actually wake me!

REI has them, so you can try it out and if it doesn't work, they have an excellent return policy.

Don