← Gear database

Casio Pro Trek PRG-340 vs Flextail Zero Power Bank 10k

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

Casio Pro Trek PRG-340 is the lighter option — 78 g lighter than the Flextail Zero Power Bank 10k (54% less weight). If grams matter to you, that is the one to beat.
shopping_cart Check today's price on Amazon
Spec Casio Pro Trek PRG-340 Flextail Zero Power Bank 10k
Weight 66 g · 0.066 kg · 0.15 lb 144 g · 0.144 kg · 0.32 lb
Brand Casio Flextail
Category Electronics Electronics
Casio Pro Trek PRG-340
66 g

Solar-powered outdoor watch with triple sensor.

Full details →
Flextail Zero Power Bank 10k
144 g

Lightest 10k battery with highest mAh-to-weight ratio on market.

Full details →

HikeLoad is reader-supported. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you. Learn more.

Casio Pro Trek PRG-340 vs Flextail Zero Power Bank 10k: which should you buy?

If saving weight is your priority, the Casio Pro Trek PRG-340 wins — at 66 g it is 78 g (54%) lighter than the Flextail Zero Power Bank 10k (144 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.

More electronics comparisons

Casio Pro Trek PRG-340 vs Garmin Instinct 3 Solar 45mm Casio Pro Trek PRG-340 vs Garmin Xero C1 Pro Chronograph Casio Pro Trek PRG-340 vs Polar Grit X Casio Pro Trek PRG-340 vs Garmin Epix Gen 2 Sapphire Smartwatch Casio Pro Trek PRG-340 vs Garmin Epix Pro Gen 2 Sapphire 47mm Casio Pro Trek PRG-340 vs Suunto Core All Black