Garmin eTrex 30x LI-IR-506
This device has all the features of the eTrex 10 & 20, as well as a couple of added bonuses. Major focus points are color display, increased storage, option for SD card for storage expansion, compatibility to add more maps either standard ones from Garmin or custom made, ability to measure height of a location, digital 3-way compass, etc. It comes with a colour display, expanded memory for more waypoints or to add more customized or standard maps, and the ability to add maps.
The most common maps loaded into the eTrex 30 are Garmin’s own TOPO maps need to be purchased separately, but the eTrex 30x is compatible with the vast majority of Garmin’s maps as well as custom made maps.