eTrex 22x and eTrex 32x VS eTrex 20x and eTrex 30x
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Garmin eTrex 30x Review: The Best GPS for Hiking?
Introducing the Garmin® eTrex® 20x and 30x Outdoor Handhelds | Business Wire
User manual Garmin eTrex 30 (English - 12 pages)
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