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Coros Apex 4 vs Garmin Forerunner 165

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

Garmin Forerunner 165 is the lighter option — 12 g lighter than the Coros Apex 4 (24% less weight). If grams matter to you, that is the one to beat.
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Spec Coros Apex 4 Garmin Forerunner 165
Weight 51 g · 0.051 kg · 0.11 lb
46mm, with nylon band
 39 g · 0.039 kg · 0.09 lb
Brand Coros Garmin
Category Navigation Navigation
Coros Apex 4
51 g

Mountain-sports GPS watch (46mm) with dual-band GNSS, titanium bezel and sapphire glass, weight with silicone band.

See it in your base weight → Full details →
Garmin Forerunner 165
39 g

Sleek GPS sports watch at 1.4oz. Lightweight design with multi-GNSS support.

See it in your base weight → Full details →

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Coros Apex 4 vs Garmin Forerunner 165: which should you buy?

If saving weight is your priority, the Garmin Forerunner 165 wins — at 39 g it is 12 g (24%) lighter than the Coros Apex 4 (51 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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