My Garmin Forerunner 301 fits fine on my wrist. I've got pretty small wrists and the velcro strap would fit someone as much as an inch smaller. They're still available from Amazon. I love it except for the fact that it doesn't accommodate a cadence sensor.
The current model is the Forerunner 305, which has a better antenna than the 301 and also displays cadence. It comes with a plastic strap, but Garmin has an optional velcro strap available for the 305.
ETA: since we're measuring our wrists... 14.5 cm (5.75"), and as I said, there's a couple of cm to spare on the strap for my 301. It's water resistant to the IPX7 standard, but it might be a little bulky to swim with on your wrist. I remember reading something on Garmin's website about people putting their Forerunners under their swim caps (which would also be easier with the velcro strap than the plastic one).
Last edited by OakLeaf; 05-13-2008 at 03:23 AM.
Speed comes from what you put behind you. - Judi Ketteler