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Brunton TruArc 15 vs COROS Apex 4 GPS Watch
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 GPS Watch (38% less weight). If grams matter to you, that is the one to beat.
COROS Apex 4 GPS Watch
64 g
Mountain sports GPS watch at just 64g for 46mm model with 65-hour GPS battery, touchscreen AMOLED display and training metrics.
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Brunton TruArc 15 vs COROS Apex 4 GPS Watch: 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 GPS Watch (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.