Guys-
A much easeier, cheaper, and less clunky alternative to the Ready Ref is a watch made by Casio. I got mine earlier this offseason and can't wait to use it. It's $35 with free shipping:
http://www.xcelwatches.com/servlet/t...-Casual/Detail
It vibrates, you can set it up to "warn" you by vibrating at 20 seconds, it comes preprogrammed with various timing incriments, overall I think it is a MUCH better product that the Ready Ref.
The only bad thing that I've found, you cannot set up two different countdown timers with warnings. By that I mean, you can't set up a 25 second countdown with a five second warning, and a 1 minute countdown with a 15 second warning. You can set them up, but they aren't separate. A little confusing, I know, but the watch treats it as: 20-5-45-15 straight through.