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by zx10rse 1367 days ago
For anyone interested in heart rate accuracy and sleep tracking accuracy I will recommend to check The Quantified Scientist reviews.

From his latest reviews of the new apple watches, heart rate is pretty much on par with chest strap and sleep tracking is also far better than anything he tested.

Apple Watch : Scientific Sleep Test - https://www.youtube.com/watch?v=LPqtfC70QTU
2 comments
rconti 1367 days ago
Second this; I found it particularly interesting that even the best device (AW) was a bit worse than I would have expected, which means my issues with my own device (Garmin) make a lot more sense.
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bob_theslob646 1363 days ago
This was great. Thanks for sharing.
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