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I had one of these for 1 month, and heart rate never read above 104 despite my actually heart rate being 170~ during exercise
Sorry, there was a problem. Please try again later.Use the following FAQ link for information on the Optical Heart Rate accuracy with some tips to get the most accurate data: https://support.garmin.com/faqSearch/en-US/faq/content/xQwjQjzUew4BF1GYcusE59.
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