I love the sapphire crystal; I don't think I'll buy another watch without it if I can help it. I've owned this watch for more than two years now, and have only picked up one scuff on the glass, which is pretty good for me (I'm tough on watches!). I've taken this swimming in Cascade lakes, camping in the desert, and every day to my office. I put it on and take it off multiple times each day. It just keeps working, perfectly.