Is MI Band 3 Sleep Tracker accurate?

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Tags

1. #wearing
2. #actigraphy
3. #later
4. #actimetric
5. #third
6. #records
7. #party
8. #graph
9. #feature
10. #converted
11. #sensor
12. #movement
13. #other
14. #exactly
15. #which
16. #unless
17. #sleep