Regarding high frequency raw data

[sweetpain]

What is the high frequency heart rate raw data I can get? Right now I got the data in every 5-15 second. Can I get HR data in very second or even faster?

Can I get the raw accelerometer data in high frequency too?

Thanks

[Gondwana]

In 'exercise' mode, HR is recorded every 1 to 3 seconds.

Accelerometer data can be sampled much more frequently. I've done 20Hz but more is possible so long as you don't want to do much with it.

[sweetpain]

Thank you Catplace. can I get HR recorded every 1-3 seconds during sleep?

[Gondwana]

If the watch is in exercise mode, yes. But you face some difficult problems:

• Your app/clockface will have to use the Exercise API to get data at that rate, and it will have to run continuously.
• You'll get A LOT of data that will be difficult to store on the watch, harder to transfer to the companion, and even harder to transfer elsewhere. The exception is if you don't want the HR data in real time (and, while sleeping, that would make sense), in which case you could use the Web API.