Head-to-Head Comparison

Updated September 5, 2026

Casio Pro Trek PRG340-1 vs Orient Bambino Version 2

Casio's timepiece meets Orient's dress watch

Quick Verdict

The Casio Pro Trek PRG340-1 ($150–$250) and Orient Bambino Version 2 ($150–$250) are closely matched timepieces at similar price points. The Pro Trek PRG340-1 emphasizes Tough Solar Quartz (No Battery Change) engineering while the Bambino Version 2 focuses on Made in Japan craftsmanship.

CasioPro Trek PRG340-1$150–$250 Check price View the dossier

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Casio

Pro Trek PRG340-1

$150–$250

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Orient

Bambino Version 2

$150–$250

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Specifications Compared

Feature	Casio Pro Trek PRG340-1	Orient Bambino Version 2
Price	$150–$250	$150–$250
Case Size	54.7 × 51.7 × 15.1mm	41mm
Movement	Tough Solar (Solar Quartz)	Automatic Caliber F6724
Caliber Type	Tough Solar Quartz (No Battery Change)	Orient In-House Automatic
Power Reserve	Tough Solar (Rechargeable)	40 Hours
Water Resistance	100m (10 ATM)	30m (3 ATM)
Crystal	Mineral Glass	Domed Mineral Crystal
Case Material	Bio-Based Resin	Stainless Steel
Origin	Casio (Japan)	Made in Japan

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Casio's design language vs Orient's approach

The Casio Pro Trek PRG340-1 features a Bio-Based Resin case at 54.7 × 51.7 × 15.1mm with Mineral Glass protection. The Orient Bambino Version 2 offers Stainless Steel construction at 41mm with Domed Mineral Crystal. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Orient

Tough Solar (Solar Quartz) vs Automatic Caliber F6724

The Pro Trek PRG340-1 runs the Tough Solar (Solar Quartz) (Tough Solar Quartz (No Battery Change), Tough Solar (Rechargeable) power reserve) at standard frequency. The Bambino Version 2 uses the Automatic Caliber F6724 (Orient In-House Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). The Bambino Version 2 offers a longer power reserve.

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Wearability & Fit

Edge: Orient

54.7 × 51.7 × 15.1mm vs 41mm — different wrist presence

At 54.7 × 51.7 × 15.1mm, the Pro Trek PRG340-1 has a bolder wrist presence compared to the Bambino Version 2 at 41mm. Water resistance differs: 100m (10 ATM) vs 30m (3 ATM).

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Value & Cost of Ownership

Edge: Draw

Same tier — different value propositions

The Casio Pro Trek PRG340-1 sits at $150–$250 and the Orient Bambino Version 2 at $150–$250. On the specs that outlast any price: the Pro Trek PRG340-1 uses Mineral Glass with Tough Solar (Rechargeable), against Domed Mineral Crystal and 40 Hours on the Bambino Version 2. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Casio

100m (10 ATM) vs 30m (3 ATM)

The Pro Trek PRG340-1 is rated to 100m (10 ATM) while the Bambino Version 2 handles 30m (3 ATM). The Pro Trek PRG340-1 is better suited for water activities.

Our Verdict

Casio

Pro Trek PRG340-1

Choose the Casio Pro Trek PRG340-1 if you prioritize Tough Solar Quartz (No Battery Change) engineering, Casio (Japan) craftsmanship, and 100m (10 ATM) water resistance. At $150–$250, it delivers Tough Solar (Solar Quartz) with Tough Solar (Rechargeable) power reserve.

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Orient

Bambino Version 2

Choose the Orient Bambino Version 2 if you value Orient In-House Automatic technology, Made in Japan heritage, and 41mm proportions. At $150–$250, the Automatic Caliber F6724 with 40 Hours power reserve makes it a compelling choice.

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The Bottom Line

The Casio Pro Trek PRG340-1 and Orient Bambino Version 2 represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Orient delivers Made in Japan engineering.

Frequently Asked Questions

The Orient Bambino Version 2 is the better buy if you want a mechanical movement; the Casio Pro Trek PRG340-1 is the better buy if you want solar power and quartz accuracy with no servicing. For water, the Casio Pro Trek PRG340-1 is rated 100 m against 30 m, which is the difference between swimming and diving on one side and splashes on the other. Neither is better at everything; the spec table above shows movement, case size, water resistance and crystal side by side so you can weigh what matters to you. We do not test units, so this is the makers' data, not a bench result.

Both are priced similarly, making this a question of preference rather than value. The Pro Trek PRG340-1 emphasizes Tough Solar Quartz (No Battery Change) technology while the Bambino Version 2 prioritizes Orient In-House Automatic precision.

Both are suitable for daily wear. The Pro Trek PRG340-1 at 54.7 × 51.7 × 15.1mm with 100m (10 ATM) water resistance handles everyday situations. The Bambino Version 2 at 41mm with 30m (3 ATM) is similarly capable. The Pro Trek PRG340-1 uses Mineral Glass while the Bambino Version 2 uses Domed Mineral Crystal.

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How This Page Was Made

Our comparisons are generated from a hand-maintained specification database and reviewed under our editorial standards. We use AI tools to assemble pages from that data. We don’t invent specs: every number traces back to the database, and when we correct an entry, the fix is applied site-wide. As an Amazon Associate, The Horologist earns from qualifying purchases.