In addition to its hefty list of cycling and running features (heart rate, pace, more), the 910XT stocks sophisticated swim data (stroke counter, distance). One-button switching gratified time-sensitive testers, as did the watch's compatibility with many ANT+ devices. The wide face and display are easy to read but add heft. Regardless, the 910XT is a serious training tool for triathletes. [$450; garmin.com]
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