Following the company's Forerunner 610, a wristwatch designed specifically for runners, Garmin has introduced a new high tech gadget that's targeted to hardcore swimmers: enter the Forerunner 910XT. With a price tag of $400, it's certainly intended for the most dedicated (or affluent) athletes, but for the outlay of cash, you'll find it provides detailed metrics such as swim distance, pool lengths, along with stroke identification and count. It even goes so far as to report one's SWOLF score, which is a measure of a swimmer's efficien