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Amazon.com: Compatible with Garmin HRM-Pro/HRM-Tri/HRM-Run/HRM-Dual Heart Rate Monitor Silicone Waterproof Case with Carabiner : Sports & Outdoors
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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
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