Originally posted by Jason Billows
I know that the Polar heart rate monitors are water resistant, but I'm not sure of the depth limits.
During freediving workshop with Kirk Krack we took a heart rate monitor and hooked it up to Kirk's laptop computer. Kirk was running a program that read the heart rate monitor and plotted it onto a graph. We did various exercises including some statics and it was really interesting to see how your heart rates change throughout the various stages of a static.
Polar has water resistan HRM's up to 50 m
The A3 that i'm buying is 30 m WR