[hangonhn]

I have both an Apple Watch 8 and the Garmin Fenix and I use the Fenix for sleep tracking. I find the Apple Watch to be too general with the stats. The Fenix gives a lot more detail. You can debate if the extra detail is useful or not. I also like the heart rate variability tracking with the Fenix (it seems to mirror how tire I feel pretty well). Lastly, the Fenix can hold a charge for several days. I can use it to sleep track and run and repeat and it charges quickly. If I sleep track with my Apple Watch, it may not have enough battery for the rest of the day. I run with both -- the Fenix for running specific tracking and the Apple for calling friends, listening to Audible, or podcasts.

[lloeki]

> hold a charge for several days

That would be an understatement, are you running/cycling a lot outside, or is it a smaller model (thus small battery because physics)?

Mine (Fenix 7) holds charge for 15 days minimum and that's with tracking workouts 3-5x/week (no GPS though, winter so I treadmill for runs). On a couple of months where I didn't do sports it held up 25-30 days.

I have SpO2 tracking disabled because it's quite battery intensive and the only use for it would be high altitude acclimation, although I must admit I looked at it during my "stop smoking" process.

[notatoad]

my experience with garmin (vivoactive, not fenix) was that they had all kinds of precision and detail, but it also didn't even notice when i got up to pee in the middle of the night - just a straight line through the graphs as though i hadn't woken up at all. that was the end of my trust in their sleep tracking.

[lloeki]

Mine reliably notices that I woke up and immediately go under when my wife comes home late in the night, which happens basically every day (because bartender) so I get somewhat statistically significant results in that regard.

It's accurate enough.

[gf000]

The Quantified Scientist does very detailed, measurement-based tests on all sort of smart watches, you might want to see where your device stands in his charts in terms of accuracy.

[danielscrubs]

Had a Garmin that would say my table had a heartbeat.

[notatoad]

that actually might have been accurate.

my garmin was really good at picking up my heart rate. there was one time i had it in a waist pack, and i was wearing a chest strap that was not paired to the garmin, and the garmin managed to pick up a pretty accurate heart rate for most of a bike ride.