Garmin Instinct 3 Solar vs Garmin Montana 700i
Weight and specs compared for 2026 — and which one to choose.
Rugged GPS smartwatch with solar charging, 28-day battery in smartwatch mode, and unlimited battery in expedition GPS mode. Altimeter, compass included.
Check price Full details →Ruggedised GPS with large touchscreen and inReach satellite.
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Garmin Instinct 3 Solar vs Garmin Montana 700i: which should you buy?
If saving weight is your priority, the Garmin Instinct 3 Solar wins — at 52 g it is 338 g (87%) lighter than the Garmin Montana 700i (390 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.