CalTopo Premium Subscription vs Garmin Instinct 3 Solar

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

CalTopo Premium Subscription is the lighter option — 52 g lighter than the Garmin Instinct 3 Solar (100% less weight). If grams matter to you, that is the one to beat.

Spec	CalTopo Premium Subscription	Garmin Instinct 3 Solar
Weight	0 g · 0.000 kg · 0.00 lb	52 g · 0.052 kg · 0.11 lb
Brand	CalTopo	Garmin
Category	Navigation	Navigation

CalTopo Premium Subscription

0 g

Digital topo mapping service. Plan routes and download offline maps.

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Garmin Instinct 3 Solar

52 g

Rugged GPS smartwatch with solar charging, 28-day battery in smartwatch mode, and unlimited battery in expedition GPS mode. Altimeter, compass included.

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CalTopo Premium Subscription vs Garmin Instinct 3 Solar: which should you buy?

If saving weight is your priority, the CalTopo Premium Subscription wins — at 0 g it is 52 g (100%) lighter than the Garmin Instinct 3 Solar (52 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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