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Garmin Instinct 3 Solar 45mm vs Polar Grit X

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

No winner on weight yet. The recorded weights have not both been verified on the same basis. Size, included parts and single-item versus pair weights can differ. Check the linked sources before choosing a replacement.

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Spec Garmin Instinct 3 Solar 45mm Polar Grit X
Weight 53 g · 0.053 kg · 0.12 lb 64 g · 0.064 kg · 0.14 lb
Brand Garmin Polar
Category Electronics Electronics
Garmin Instinct 3 Solar 45mm
53 g

Rugged solar-powered GPS watch. 36-90 days smartwatch battery with solar charging capability.

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Polar Grit X
64 g

Multisport GPS smartwatch weighing 64g with wristband. Rugged design with navigation, long battery life, and military-grade durability.

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Garmin Instinct 3 Solar 45mm vs Polar Grit X: which should you buy?

The listed weights alone are not enough to choose between these products. Confirm the size, included parts and weight basis against each source; choose equipment for the function and fit you need.

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

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