The Garmin Colorado 300 is fully supported by GeoBuddy.
GeoBuddy can connect to the Garmin Colorado 300 to transfer geocaches, waypoints, routes, and tracks. Your GPS stores its data on a memory card. GeoBuddy will read and write geocaches, waypoints, routes, and tracks to and from this card, and can display your GPS data over USGS topo maps and aerial photos.
The Garmin Colorado 300 can hold 1000 waypoints. Waypoints on the Garmin Colorado 300 can contain up to 32 characters. Waypoint comments or notes can contain up to 32 characters.
These are the waypoint symbols for the Garmin Colorado 300 that are displayed in GeoBuddy:

The Colorado 300 can hold 50 routes, each containing up to 250 turns or stops. Route names on the Garmin Colorado 300 can contain up to 32 characters.
The Colorado 300 can hold 501 tracks. Saved tracklogs on the Colorado 300 can have up to 10000 trackpoints. The active tracklog holds 10000 trackpoints. Track names on the Garmin Colorado 300 can contain up to 32 characters.
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