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Brunton TruArc 15 vs Coros Apex 4
Weight and specs compared for 2026 — and which one to choose.
Brunton TruArc 15 is the lighter option — 24 g lighter than the Coros Apex 4 (38% less weight). If grams matter to you, that is the one to beat.
Coros Apex 4
64 g
Mountain-sports GPS watch (46mm) with dual-band GNSS, titanium bezel and sapphire glass, weight with silicone band.
Check price Full details →Brunton TruArc 15 vs Coros Apex 4: which should you buy?
If saving weight is your priority, the Brunton TruArc 15 wins — at 40 g it is 24 g (38%) lighter than the Coros Apex 4 (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 navigation page, or browse the full gear weight database.