iQO2 is compatible with more than 60+ devices including Garmin, SRM, CycleOps, Mio and Pioneer.

Garmin:
Forerunner series: 50, 60 , 110, 210, 301, 205, 305, 310XT, 405, 405CX, 410, 610, 910XT
Edge series: 205, 305, 500, 510, 705, 800, 810

SRM:
Power Control 6,7,8

CycleOps:
Joule GPS, Joule, Joule 2.0, Joule 3.0

Pioneer:
Pioneer SGX-CA900, SCX-CA500

Mio:
Mio Cyclo 105 HC, Mio Cyclo 305 HC

Polar and Suunto products will not directly upload to iQO2. You can upload files from the manufacturer software.