Casio 2981 User Manual page 35

If this happens:
The watch does not
calculate energy
consumed.
The energy consumed
value is strange.
Check this:
Is your heart rate above 90 bpm?
• The watch will not calculate energy
consumed unless your heart rate is 90
bpm or higher.
Are your personal information settings
correct?
• The watch calculates energy consumed
using your heart rate and personal
information. Make sure your personal
information settings are correct and up to
date.
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