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FR 245M HR inaccuracy while running.

I've been running three 10K races with my 245M, and when I pass 8km or about 40 munutes, my HR readings drop sharply from 180 to 20. Then it goes up to ~110 and stuck there for the rest of the run.

I don't sweat a lot during my run and I wore 245M at proper position.

Will factory reset help fix this problem? Or does anybody know how to fix it?

Top Replies

gjoregj over 5 years ago +1

What is "at proper position" for you?

Does it look like on this picture?
6384527 over 5 years ago in reply to gjoregj +1

Similar to that picture but only one finger above my wrist bone. Also wore my watch tight but comfortable enough.

Maybe I should wear it a bit more higher. I'll test it at my next run. Thanks!

All Replies

0 gjoregj over 5 years ago

What is "at proper position" for you?

Does it look like on this picture?

0 6384527 over 5 years ago in reply to gjoregj

Similar to that picture but only one finger above my wrist bone. Also wore my watch tight but comfortable enough.

Maybe I should wear it a bit more higher. I'll test it at my next run. Thanks!