Does anyone have a source for the "Watch-keeping Alarm Clock" that one sets for say 15 minutes; after 15 minutes it rings; you stop it and go look around; you hit "Reset/Restart" and go back to sleep ... for 15 minutes?
This would be different from a standard kitchen 'egg timer'. You do not need to wind it to 60 minutes and then set it to 15 minutes each time.
Probably just me, but I would suggest that anyone who thinks a wristwatch or cell phone alarm will do for the long haul, probably hasn't done much singlehanded sailing... (grin) Sometimes, an alarm that will, literally, wake the dead, is the only
thing that will do...
You may be thinking of the Watch Commander... I've never used it, but I've heard favorable comments. I like the idea, could be tempted when I have some money burning a hole in my pocket, but it's a bit pricey, however:
Sail Safely - The Watch Commander passage timer
I'm happy with an alarm clock with an ultra loud alarm, and it's a bit more practical... Got mine from a site that specializes in accessories for truckers, it works off both an internal battery, and has a cigarette plug adapter as well, or could be hard-wired to the ship's battery... Features 2 volume settings for the alarm, and if the louder one doesn't wake you, nothing will...
Check out the trucker's sites, they have an assortment of stuff that's pretty handy for small boats, at non-marine prices...