Originally Posted by
gkamieneski
Guess I wonder if the Garmin Instinct sends in generic ANT+, i.e., will it send to my Byrton head unit?
All modern Garmin watches have an optical heart rate sensor built in to read your HR at the wrist, and can broadcast that over ANT+ as if they were a chest strap. You can pair the watch to the head unit, which thinks it's a strap. Unless there's something specifically preventing this in your Bryton there should be no problems. A lot of stores like REI have generous return policies and will give you your money back if you're not happy.
Instinct, Forerunner, Fenix and Epix all do this, I think Venu also.