A couple of days ago, my Garmin HRM-run strap stopped working. Because I thought the battery would have just run low, I replaced it with a (kind of expensive) Duracell 2032 battery. So far I have tried two new batteries, but the strap isn't found by my FR645M anymore. I have tried replacing the battery, deleting the strap from my watch and searching for it again. Is there anything else I can do? I'm kind of afraid it has died on me - which would really be frustrating, as I havent' been using it for more than two months. Has anyone got any advice?