Garmin took the extra mile and made FR910xt useful even while being under water. Water has always presented an issue to GPS tracking devices as signal gets way to weak to work properly.

 

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So Garmin came up with complex algorihms, which adjusted FR910xt to record your swimming path, strokes and pace of the practice. User is able to edit pool length to have all the data such as the number of distances on your writs. Watch can recognize different stroke patterns such as freestyle, back, breast, butterfly, combination and free strokes.
The Garmin Forerunner 910xt is waterproofed to 50 meters deep.

Openwater swimming tracking is another upgrade the FR910xt got. Garmin’s complex algorithms can track your path between the strokes(since when the watch is under water GPS signal dies) and can match up a realistic image on google maps.