The Fenix 3 is still going strong for me after two years with it. I don't usually use GPS on it, so I charge it about once a week when it's around 50% charge (sometimes I forget to check, which is why I plan for about weekly charging).

Also, the edge is slightly raised above the face on it, so while there are a couple of nicks on the bezel, there are no scratches on the glass. The sapphire glass may also be part of that.

App ecosystem is minimal, but I honestly don't need any apps anyway.