The error occurs sometimes immediately, sometimes after a few weeks period of use.
The "old" belt, meaning standard belt worked for me and has not make that mistake.
Well, that the error only sporadically in my appearance- annoying enough.
The only way out -also according to Garmin - was, "to wear cotton clothing" and no underwear (ie reliable pulse function only in underwear without synthetic fibers).
Hardly anyone, and certainly not the ambitious runners, for this clock comes in question, will want to run with sweat in cotton shirts !!
Apart from this error and the ultimate Running Watch GPS Sport Clock for me!
If the next model will be beautified something, a dream.
