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The pulse sensor with the new version 21.22 is very bad.

m8d16 7 months ago

Normally it works fine, I always compare it with my Polar H10 and there is little difference, today my Polar ran out of battery and just yesterday I updated to 21.22...

0 Lewis 7 months ago

try to backup and a reset to default to see if its solved, if not you can downgrade the firmware