For my case with cycle meter, if another watch app came into focus, HR to cycle meter failed.
I spent the $55 to get the wahoo strap. 100% solid.
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I have NEVER regretted going on a ride;
I have often regretted not going when I could have!
I am grateful for the headwind that challenged me today!
I am grateful for the tailwind that helped me go fast!
Clydesdales and Athenas Strava Club
http://www.strava.com/clubs/clydesda...bikeforums-net