What is the use of Mi Band 3?

Related questions

1. How does Fitbit know I'm sleeping?
2. Do magnetic fields cause cancer?
3. Should I wear my Fitbit to bed?
4. What is Mi Band 3?
5. Is Mi band accurate?
6. What does MI band do?

Tags

1. #track
2. #whether
3. #jogging
4. #running
5. #skipping
6. #cycling
7. #measure
8. #instance
9. #heart
10. #their
11. #comes
12. #sports
13. #ability
14. #activity