Sleep Tracking Test - Mi Band 5, Apple Watch 6, Polar m403

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Ok, I did this for science! Sleeping in three smart devices on your wrist is quite uncomfortable. And before you start asking - I was also switching them around between wrists (left, right) so I wasn't wearing all three on one wrist all the time. That could've impacted the measurements.

Here are my impressions of how sleep tracking works on the Xiaomi Mi Band 5, Apple Watch Series 6, and Polar Sports Watch m430.

Important - I only tested sleep tracking here, not fitness or any other features of these devices.

So how do they stack up predicting your time asleep, sleep stages, deep sleep, REM sleep, and more? Watch this video to find out!

I also compared their apps and the comfort of wearing them to bed.

You can follow me on Twitter @michalmalewicz
And check out my book:

Happy sleeping!
Apple Watch
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