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For most of the last fifteen to twenty years I've been unable to hear an alarm clock. As a result, I've (unconsciously) learned to simply wake up when I need to. More accurately, I usually don't wake up at exactly the time that I need, to but a bit before. Occasionally, when I'm at home, if my alarm goes off because I went back to sleep, my husband will wake me up and then I get up and start my day. But now I'm living at our new house during the work week - it's close to work, and the shorter commute buys me almost an hour a day, and in addition it means that the house isn't standing empty. But it also means that my husband isn't there to wake me up, because he (and most of our stuff) are still at the old house. So I brought a travel alarm that I've had for years - at least ten years, maybe more like fifteen or twenty. It's got an attachment that looks like a little flying saucer that you put under the mattress and it vibrates and wakes