Sleep Monitor - Oppo Watch User Manual

OPPO Watch can track your daily step count, workout time, calories burned,
and number of activity sessions with a graphic presentation.

5.3 Sleep monitor

If you wear your watch to sleep, the watch will have your sleep report ready to
be viewed when you wake up the next day. (Note that OPPO Watch can only
track sleeping from 8 PM to 10 AM local time.)
When you wake up, you can also open the Sleep app to view your sleep
report for the previous night. (The watch will not send the sleep notification if
you have already viewed the sleep report on your phone).
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