The Apple Watch Series 2 is way better than the Fitbit Blaze and Fitbit Charge HR. I still currently have a Fitbit Charge HR it is cracked. I gave my Fitbit Blaze to somebody with a dying Fitbit Zip (he likes it). I used to use a Garmin for any type of run (Garmin Forerunner 225) then the connected GPS Fitbit (Fitbit Blaze) now I use the Apple Watch for runs (Apple Watch Series 2). When I still used the Garmin I also used two other Fitbits in that time period (Fitbit Charge HR and Fitbit Alta then Fitbit Charge because the Alta falls off of me). The Apple Watch does not fall off of me. 5Stars
**Built in GPS super accurate (more accurate than Garmin and Fitbit).**
**Great HeartRate not always on. On when you are still, breathing by using the breath app, and while you do a workout (including swimming). Accurate HR. **
Swimming Tracking (50 Meters)
**Breath App (Comes with Watch)**
Sleep ++ (accurate sleep tracking app you should download)
Power Reserve does not say that it will turn off activity tracking clearly.