Where can I find this?
Can't see any difference and there wasn't any fixes for altimeter either. I have used workaround when altimeter stop working during the running activity. Another issue for me is "sawtooth" in the first…
For me the altimeter is not working better with this new version.
Mais of the time it is under estimating the elevation by a smooth curve.
Sometime it is working but not able to understand why sometime…
The 645 has no barometer/altimeter. It bases it's altimeter data on GPS location.
ImDisaster The 645/645M most definitely has a barometric altimeter. I'm not sure where you received that information, but it's incorrect. It uses GPS for elevation and the barometric altimeter adjust the altitude based on elevation gain/loss or changes in pressure.