Does Polar M200 Have Sleep Tracking?

Yes, Polar M200 does have sleep tracking feature. It will track how well and how long you sleep.

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About 

My name is David and I'm a total tech nerd. I always have been and always will be. I've really gotten into smartwatches since they've come out. They show great potential to change our lives almost as much, if not just as much, as smartphones have. I'm also an internet entrepreneur that makes my living via tech. Feel free to contact me with any questions or comments you have!