You can already get golf watches that show hole data and track your swing. Let's be honest, though -- ideally, they'd give you some insight as to which club is best for that tricky dogleg or sand trap. Garmin, at least, thinks it can provide that helping hand. It's now shipping an Approach CT10 tracker that fastens to the top of your clubs and provides insight on a club-by-club basis thanks to automatic syncing with supporting Garmin watches. You'll ideally know which club to choose based on your actual performance and situation, rather than picking one based on arbitrary expectations. A 9 iron may be a better choice than a pitching wedge, for instance.