Garmin 010-12883-00 Dual Heart Rate Monitor for sale online | eBay
Garmin HRM-Dual™ | Heart Rate Monitor with Chest Strap
Garmin HRM-Dual | Strictly Bicycles
Garmin HRM Run, Dual, Swim, Tri and Pro Compared - OneManEngine
HRM-Dual – Sports Basement
Why does HRM-Dual consistently shows *very* high HR (170+) during first 6-8 min of warmup during runs? Is this a fit issue? Don't feel like I've maxed out my HR; not gasping