Garmin eTrex 10, 20, and 30

Garmin eTrex 30

All three eTrex models are waterproof and feature paperless geocaching. Both have basemaps- the eTrex 20 and 30 adds color screens, a micro-SD card slot, and the ability to add maps, including custom maps. The eTrex 30 further adds a three-axis compass and a barometric altimeter.

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