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Garmin eTrex SE vs Garmin GPSMAP 66i

Weight and specs compared for 2026 — and which one to choose.

Garmin eTrex SE is the lighter option — 73 g lighter than the Garmin GPSMAP 66i (32% less weight). If grams matter to you, that is the one to beat.
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Spec Garmin eTrex SE Garmin GPSMAP 66i
Weight 157 g · 0.157 kg · 0.35 lb 230 g · 0.230 kg · 0.51 lb
Brand Garmin Garmin
Category Navigation Navigation
Garmin eTrex SE
157 g

Rugged entry-level handheld GPS with up to 168-hour battery life in standard mode. Sunlight-readable display with reliable satellite reception for trail navigat...

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Garmin GPSMAP 66i
230 g

Robust handheld GPS with inReach satellite communicator for two-way messaging. Preloaded topographic maps with 100-hour battery life.

See it in your base weight → Full details →

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Garmin eTrex SE vs Garmin GPSMAP 66i: which should you buy?

If saving weight is your priority, the Garmin eTrex SE wins — at 157 g it is 73 g (32%) lighter than the Garmin GPSMAP 66i (230 g). That said, the heavier option may justify the extra grams with more capacity, durability or comfort, so weigh the trade-off against how you'll use it.

See where both rank against everything else in this category on the lightest navigation page, or browse the full gear weight database.

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