If you use turn-by-turn course navigation, you should know that it no longer works after the 13.20 update. I found out the hard way, but thanks to helpful posts on the Instinct Solar forum, I was able to downgrade to 12.20 and get my watch working again. If you haven't updated to 13.20 yet and are still on 12.20, and you use turn-by-turn course navigation, I recommend turning off automatic updates NOW! See my posts in this thread on Instinct Solar: forums.garmin.com/.../13-20---hiking-navigation-behavior-different-from-12-20