When I remember (and that hasn't been all that often here lately), I set the Fitbit to record an activity. Then I compare the cal burn from the Fitbit to the HRM, If it's a high motion activity, they are very close, however, when it's something like weight lifting, then the HRM shows a larger calorie burn.
Not by might, nor by power, but by My Spirit says the Lord of hosts. Zechariah 4:6 NKJV
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