Head-to-Head Comparison

Updated September 5, 2026

Casio Pro Trek PRG340-1 vs Stauer 1920s Retrograde

Casio's timepiece meets Stauer's dress watch

Quick Verdict

The Stauer 1920s Retrograde ($100–$150) delivers Quartz technology in the tier below the Casio Pro Trek PRG340-1 ($150–$250). The 1920s Retrograde measures 43mm and is rated 100m (10 ATM), as listed by Stauer. The Pro Trek PRG340-1 justifies its premium with Casio (Japan) heritage and Tough Solar (Solar Quartz). Both represent excellent choices in the luxury watch category.

CasioPro Trek PRG340-1$150–$250 Check price Stauer1920s Retrograde$100–$150 Check price

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Casio

Pro Trek PRG340-1

$150–$250

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Stauer

1920s Retrograde

$100–$150

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Specifications Compared

Feature	Casio Pro Trek PRG340-1	Stauer 1920s Retrograde
Price	$150–$250	$100–$150
Case Size	54.7 × 51.7 × 15.1mm	43mm
Movement	Tough Solar (Solar Quartz)	Quartz
Caliber Type	Tough Solar Quartz (No Battery Change)	Quartz
Power Reserve	Tough Solar (Rechargeable)	Battery
Water Resistance	100m (10 ATM)	100m (10 ATM), as listed by Stauer
Crystal	Mineral Glass	Mineral crystal
Case Material	Bio-Based Resin	Gold-tone stainless steel (listing photo shows a gold-tone finish; Amazon spec table says stainless steel)
Origin	Casio (Japan)	Stauer (USA brand, imported)

Category-by-Category Analysis

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Design & Aesthetics

Edge: Draw

Casio's design language vs Stauer'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 Stauer 1920s Retrograde offers Gold-tone stainless steel (listing photo shows a gold-tone finish; Amazon spec table says stainless steel) construction at 43mm with Mineral crystal. Both represent their brand's distinct design philosophy and heritage.

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Movement & Performance

Edge: Draw

Tough Solar (Solar Quartz) vs Quartz

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 1920s Retrograde uses the Quartz (Quartz, Battery reserve) at standard. Power reserves are closely matched.

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Wearability & Fit

Edge: Stauer

54.7 × 51.7 × 15.1mm vs 43mm — different wrist presence

At 54.7 × 51.7 × 15.1mm, the Pro Trek PRG340-1 has a bolder wrist presence compared to the 1920s Retrograde at 43mm. Water resistance differs: 100m (10 ATM) vs 100m (10 ATM), as listed by Stauer.

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Value & Cost of Ownership

Edge: Stauer

Stauer sits in the lower tier

The Casio Pro Trek PRG340-1 sits at $150–$250 and the Stauer 1920s Retrograde at $100–$150. On the specs that outlast any price: the Pro Trek PRG340-1 uses Mineral Glass with Tough Solar (Rechargeable), against Mineral crystal and Battery on the 1920s Retrograde. Service intervals are typically 5-7 years for both.

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Water Resistance

Edge: Draw

100m (10 ATM) vs 100m (10 ATM), as listed by Stauer

The Pro Trek PRG340-1 is rated to 100m (10 ATM) while the 1920s Retrograde handles 100m (10 ATM), as listed by Stauer. Both offer identical water resistance ratings.

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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Stauer

1920s Retrograde

Choose the Stauer 1920s Retrograde if you value Quartz technology, Stauer (USA brand, imported) heritage, and 43mm proportions. At $100–$150, the Quartz with Battery power reserve makes it a compelling choice.

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The Bottom Line

The Casio Pro Trek PRG340-1 and Stauer 1920s Retrograde represent two distinct approaches to fine watchmaking — the Casio bringing Casio (Japan) tradition while Stauer delivers Stauer (USA brand, imported) engineering.

Frequently Asked Questions

On price, the Stauer 1920s Retrograde sits a band lower ($100–$150 against $150–$250), so it is the cheaper way into the category. 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.

The Stauer 1920s Retrograde offers better upfront value, sitting a tier lower at $100–$150. However, the Casio Pro Trek PRG340-1 may justify its premium with superior finishing, heritage, or resale value.

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 1920s Retrograde at 43mm with 100m (10 ATM), as listed by Stauer is similarly capable. The Pro Trek PRG340-1 uses Mineral Glass while the 1920s Retrograde uses 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.