I'm sure a lot of confusion, frustration and disappointment could be avoided if people spent a few minutes with the f5 manual (http://www8.garmin.com/manuals/webhelp/fenix5/EN-US/GUID-C8E25FD1-3499-4B5C-B45F-C4BF88283284-homepage.html).
This forum's a great place for understanding some of the more intricate workings of the f5, but the quickest, most accurate resource for core functionality is always going to be the manual. I just don't get it when I see people all set to return their f5s simply because they've not bothered to read the instructions. Referring to the manual doesn't make you any less a man (or woman), and has the added bonus you might discover that the f5 can do things you never realised it could!
End of rant - file with "use the search function" ;)