Timer with Vibrator?

Hello, I am a teacher and am getting ready for surgery. I have been trying and trying to remember to take sips of water every 15 minutes in order to get in my 64 oz of water a day that I need. I can't seem to remember to do it while I'm teaching during 50-minute long stretches. So, what I would like to find is a timer that I could set every 15 minutes with vibrator for a ringer that I could keep in my pocket to remind me to take a drink. I already checked to see if my cell phone has that feature and it does, but it takes quite a bit of time every time it rings to re-set the timer for another 15 minutes, so I am looking for one that might also have an easy "snooze" feature that would re-set itself for another 15 minutes with just the push of a button or something so that it doesn't disrupt my teaching. Has anyone found something like that? If not, does anyone have any other suggestions for me on what I could do to remember to take sips every 15 minutes? I'm not quite comfortable with the idea of telling my students and having them remind me. Thanks!

This has exactly what you are describing a double click on the button resets and restarts the timer : ) http://www.epill.com/count.html good luck Sarah

http://www.hsdcstore.com/index.asp?PageAction=VIEWPROD&ProdID=21 half the price same product Sarah