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Amazon.com: Garmin Forerunner 55 GPS Running Watch + HRM-Dual Heart Rate Monitor, Black : Electronics
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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
![Amazon.com: Garmin Forerunner 55 GPS Running Watch + HRM-Dual Heart Rate Monitor, Black : Electronics Amazon.com: Garmin Forerunner 55 GPS Running Watch + HRM-Dual Heart Rate Monitor, Black : Electronics](https://m.media-amazon.com/images/I/31qUjuwEYIL._AC_.jpg)
Amazon.com: Garmin Forerunner 55 GPS Running Watch + HRM-Dual Heart Rate Monitor, Black : Electronics
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Garmin Hrm Pro Tri Heart Rate Strap Run 4.0 Swimming Running Hrm-dual Ant+ Bluetooth Bike Bicycle Cycling Computer Gps Hrm4-run - Bicycle Computer - AliExpress
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Garmin HRM-Pro/Tri/Run/DUAL/RDP/Pro Plus Running, Cycling And Swimming Triathlon Heart Rate Belt With Brand New Original - AliExpress
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