Casio Pro Trek PRG-340 vs Garmin Xero C1 Pro Chronograph

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

Garmin Xero C1 Pro Chronograph is the lighter option — 6 g lighter than the Casio Pro Trek PRG-340 (9% less weight). If grams matter to you, that is the one to beat.

Spec	Casio Pro Trek PRG-340	Garmin Xero C1 Pro Chronograph
Weight	66 g · 0.066 kg · 0.15 lb	60 g · 0.060 kg · 0.13 lb
Brand	Casio	Garmin
Category	Electronics	Electronics

Casio Pro Trek PRG-340

66 g

Solar-powered outdoor watch with triple sensor.

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Garmin Xero C1 Pro Chronograph

60 g

Compact digital chronograph for precise timing.

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Casio Pro Trek PRG-340 vs Garmin Xero C1 Pro Chronograph: which should you buy?

If saving weight is your priority, the Garmin Xero C1 Pro Chronograph wins — at 60 g it is 6 g (9%) lighter than the Casio Pro Trek PRG-340 (66 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.

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