There's a chap on YouTube that compares smart watches to pro (or prosumer?) devices. His take away from testing apple series 7 watch [0] is that it's very accur

There's a chap on YouTube that compares smart watches to pro (or prosumer?) devices. His take away from testing apple series 7 watch [0] is that it's very accurate when it comes to heart rate and HRV. The appeal of having a smart device like this is that you don't have to worry much about manual tracking. My problem with the Apple Watch is that I couldn't keep it charged. I've also heard really interesting personal stories about Garmin body battery functionality so I might check that out next. [0]: https://www.youtube.com/watch?v=CHQxhuqgvaw https://www.youtube.com/watch?v=CHQxhuqgvaw