255 is really inconsistent with the hr readings. Sometimes it just stops reading my hr, and I need to re-adjust the wristband or shake the clock to make it start reading again.
It is a very annoying problem when trying to monitor sleep and hrv. Had several night where it interrupts and that nights data is gone.
I have tried to turn off hr monitor, reboot and put in on again. No difference.
Anyone else having the same issues?