If you are wondering which to choose between the the Garmin Fenix 5 and Fenix 5x then I found this article that is really helpful. There is also a video aswell.
I have my Garmin Fenix 5x and I love it and glad I got it over the Garmin Fenix 5
Check it out
http://www.activejr.com/garmin-fenix-5x-vs-fenix-5-feature-review-maps-battery-design-watch-best/