Oh yeah, I know the type. Dunno how reliable they are - I'd say most likely less reliable than the chest strap type, but hey, it's giving you a bit of an idea.
On that topic, I need to change the batteries in my HRM, they ran out in the Tullah Challenge and I haven't got a new one yet
35kg lost. (November 2005 - October 2006)
15kg gained again (as at October 2010).
Back to the drawing board - Let's do this thing!
"You can't change the winds, but you can change the sails"
"Reach out and take control of what lands in your lap"