Garmin Vivosmart 4: The First Few Days Hands-on (with SpO2 & Body Battery)

Here's everything you need to know about the new Garmin Vivosmart 4, Garmin's first watch with Body Battery, and the second with SpO2 measurement.

Full post: https://dcra.in/Vivosmart4

I dive into how the new Body Battery works (or whether it even works), plus details on how Garmin is implementing SpO2 in sleep-related metrics. I cover both hands-on with the watch as well as the app, which is equally as important to the whole equation. But as I show, all isn't as good as one might hope. Perhaps it's just early days.

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