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Forerunner 205/305 Garmin Express Compatibility
The Forerunner 205/305 is compatible with Garmin Express on Windows computers running Windows 7 SP1 or newer, and Mac computers running OSX 10.12 or older.
The Forerunner 205/305 is not compatible with Mac computers running 10.13 or newer.
For information about setting up your device using Garmin Express, see Related Content.