@ajvasquez I just get error straight away, they don't ask me anything about these information

Are we able to access the individual beats live? Or can we only access them in a post-fact kind of way, to do analysis etc. I'd like to access the individual beats of the last 2-5 minutes in order to calculate RMSSD directly on the intervals. Is that doable?

@Frameworks Engineer, can I access Accelerometer data and Oxigen Saturation using Observer Queries? Will the -15 second updates be able to include records of the data second by second?

Hey thanks for your reply! Yeah, I do need live updates. I need to be able to detect REM sleep through an algorithm I developed that requires movement, heart rate and oxigen saturation. So yes, I could wait for the watch to signal the user is asleep to begin monitoring, but then I will need relatively continuous monitoring. One thing I was thinking to try was: When asleep do a check, if certain conditions are met, continue monitoring, otherwise do another check in 5 minutes. If conditions are met, do continuous monitoring for a while, in order to determine if you are in REM or not. Thanks for the link, I will look into it. If my explanation bring out other ideas, I'll look into them as well!