I have just lost my second Polar Xtrainer after using it in the water after replacing the battery. I didn't push any buttons, they just died during or after the swim.

I think Polar tells you to return to factory for battery replacement. I did this a couple of times. It takes forever, and they messed it up once.

Has any vendor developed a technology allowing a waterproof HRM that actually allows you to change the battery? I guess this is asking too much, but we now drop concrete bombs that destroy tanks, so maybe this technology is feasible sometime this century.

Inundated in Florida,