From Fellrnr.com, Running tips
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* The 910XT will display the route you've run, though it does not have any built in maps. You can also upload courses and display them which is great for trail ultramarathons.
* There are several optional extras for the 910XT, including a [[Footpod]] and heart rate strap. For cyclists there is also a [http://www.amazon.com/Garmin-Speed-Cadence-Bike-Sensor/dp/B000BFNOT8 speed/cadence sensor] and it works with various power sensors.
* The 910XT displays and records [[Firstbeat| Training Effect]], an indicator of how hard or effective a training session is.
* The 910XT can record swimming, but it does this with an accelerometer rather than GPS. You have to tell the 910XT how long the pool is, but it will detect each lap, as well as your stroke.
* '''Graphs'''. Instead of simply displaying a numeric value for things like heart rate, some watches will display a graph of the value over time, giving you a sense of how things are progressing.
* '''Running Dynamics'''. Some of the newer Garmin watches can show and record Vertical Oscillation (VO) and Ground Contact Time (GCT).
* '''WiFi/Bluetooth Uploads'''. While the automatic upload of workouts via WiFi or Bluetooth to a Smartphone is nice, the upload will typically only go to the manufacturers web site.
* '''Web Configuration'''. Some watches allow you to setup the configuration via a web site, and then download your changes. This is vastly easier than fiddling with the watch.