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Casio Pro Trek PRG-340 vs Nitecore NB Air 5000mAh

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

Casio Pro Trek PRG-340 is the lighter option — 23 g lighter than the Nitecore NB Air 5000mAh (26% less weight). If grams matter to you, that is the one to beat.
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Spec Casio Pro Trek PRG-340 Nitecore NB Air 5000mAh
Weight 66 g · 0.066 kg · 0.15 lb 89 g · 0.089 kg · 0.20 lb
Brand Casio Nitecore
Category Electronics Electronics
Casio Pro Trek PRG-340
66 g

Solar-powered outdoor watch with triple sensor.

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Nitecore NB Air 5000mAh
89 g

Ultra-lightweight power bank with 5000mAh capacity, 18W USB-C fast charging, IPX7 waterproof, carbon fiber frame construction.

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Casio Pro Trek PRG-340 vs Nitecore NB Air 5000mAh: which should you buy?

If saving weight is your priority, the Casio Pro Trek PRG-340 wins — at 66 g it is 23 g (26%) lighter than the Nitecore NB Air 5000mAh (89 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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