Running

http://www.dcrainmaker.com/2009/05/how-to-race-tris-with-garmin-forerunner.html

edit: ooops

Note – this may be mentioning the obvious, but for the love of all things not-waterproofed, please do NOT put the Garmin Edge (cycling version) on your head and go swimming. It’s not designed to take water from the bottom and will die about 2 seconds after being submerged.

sorry but no tri for you. I was thinking of the forerunner... http://www.dcrainmaker.com/2007/09/how-to-swim-with-your-garmin-forerunner.html