Regretfully, I can claim to owning one of these things. Saw it a few years ago at American Science & Surplus in Milwaukee (visiting the parents) and bought it. It was like 2 bucks. Figured I could try it out instead of eating another 2 double cheeseburgers from McDonalds. It isn't a bad things to have. Can't say I have used the compass or thermometer on a regular basis, but the whistle is relatively loud, not Fox 40 loud, but not bad. The light is still working also. It's my "nightlight"/flashlight when I have to go to the bathroom and don't want to wake up the DLW (that's Dear Lovely Wife) by having to turn on bedside light.