The Garmin Edge 520 GPS Bike Computer is a mountable computer for tracking all things bike-related. Watch your speed, mileage, and more, all from the view of the saddle. When you get home, upload it to your computer to tinker with your training regimin. Pair-able with ANT+; indoor trainers for winter when you can't get outdoors. Features of the Garmin Edge 520 GPS Bike Computer Reports cycling-specific VO2 max and recovery time when used with power and heart rate Pairs with compatible ANT+? indoor trainers for data display and control Tracks Functional Threshold Power (FTP), watts/kg and cycling dynamics when used with Vector? or Vector 2 power meters Connected Features include automatic uploads, live tracking, Smart notifications, send/receive courses, social media sharing and weather