If you're a multi sport endurance athlete, then your training isn't just limited to the bike. That means that during running, swimming, or Nordic events, your whiz bang handlebar mounted head unit is as useful as an aerodynamic helmet in an open water swim. Garmin's Forerunner 920XT transitions with you between disciplines, making the most of your training aid investment by staying relevant and gathering data related to all of your endurance activities. The brightly lit touch screen displays every day biometrics ranging from calories burned to sleep patterns. When it's time to train, the 920XT ticks off the swim strokes, alps, altitude gained, and distance traveled to the tune of its own metronome. When paired with a heart rate monitor, the list of displayed metrics expands to include VO2 max estimates, running form coaching, rest period advisory, race time estimator, and of course heart rate. The ability to upload and manage data in Garmin Connect means that your training also takes on a social dimension, allowing you to share data from each workout or individual leg and transition of your brick session. Synching the 920XT with a smart phone allows for live tracking, so your rivals or friends can see your numbers and location in real time.