Coros APEX 4 (42mm) vs Polar Grit X
Weight and specs compared for 2026 — and which one to choose.
Mountain sports GPS watch with dual-frequency satellite positioning for improved accuracy, ECG heart rhythm monitoring, and barometric altimeter for navigation
Multisport GPS smartwatch weighing 64g with wristband. Rugged design with navigation, long battery life, and military-grade durability.
Building a pack? Add either one to your HikeLoad list, or drop its weight into the base weight calculator, and see what it does to your total weight.
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Coros APEX 4 (42mm) vs Polar Grit X: which should you buy?
If saving weight is your priority, the Coros APEX 4 (42mm) wins — at 44 g it is 20 g (31%) lighter than the Polar Grit X (64 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 electronics page, or browse the full gear weight database.