Casio Pro Trek PRG340-1 vs Timex Marlin Automatic 40mm
Two timepieces compared — $150–$250 vs $250–$500
Quick Verdict
The Casio Pro Trek PRG340-1 ($150–$250) offers Tough Solar Quartz (No Battery Change) precision in the tier below the Timex Marlin Automatic 40mm ($250–$500). The Pro Trek PRG340-1 measures 54.7 × 51.7 × 15.1mm and is rated 100m (10 ATM). The Marlin Automatic 40mm counters with Made in Japan (Movement) craftsmanship and 30m (3 ATM) water resistance. Both are exceptional timepieces for their respective tiers.
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Specifications Compared
| Feature | Casio Pro Trek PRG340-1 | Timex Marlin Automatic 40mm |
|---|---|---|
| Price | $150–$250 | $250–$500 |
| Case Size | 54.7 × 51.7 × 15.1mm | 40mm |
| Movement | Tough Solar (Solar Quartz) | Automatic Miyota 8205 |
| Caliber Type | Tough Solar Quartz (No Battery Change) | Miyota Automatic |
| Power Reserve | Tough Solar (Rechargeable) | 40 Hours |
| Water Resistance | 100m (10 ATM) | 30m (3 ATM) |
| Crystal | Mineral Glass | Mineral Crystal |
| Case Material | Bio-Based Resin | Stainless Steel |
| Origin | Casio (Japan) | Made in Japan (Movement) |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Timex'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 Timex Marlin Automatic 40mm offers Stainless Steel construction at 40mm with Mineral Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Tough Solar (Solar Quartz) vs Automatic Miyota 8205
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 Marlin Automatic 40mm uses the Automatic Miyota 8205 (Miyota Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). The Marlin Automatic 40mm offers a longer power reserve.
Wearability & Fit
54.7 × 51.7 × 15.1mm vs 40mm — different wrist presence
At 54.7 × 51.7 × 15.1mm, the Pro Trek PRG340-1 has a bolder wrist presence compared to the Marlin Automatic 40mm at 40mm. Water resistance differs: 100m (10 ATM) vs 30m (3 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio Pro Trek PRG340-1 sits at $150–$250 and the Timex Marlin Automatic 40mm at $250–$500. On the specs that outlast any price: the Pro Trek PRG340-1 uses Mineral Glass with Tough Solar (Rechargeable), against Mineral Crystal and 40 Hours on the Marlin Automatic 40mm. Service intervals are typically 5-7 years for both.
Water Resistance
100m (10 ATM) vs 30m (3 ATM)
The Pro Trek PRG340-1 is rated to 100m (10 ATM) while the Marlin Automatic 40mm 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.
Check Price on AmazonTimex
Marlin Automatic 40mm
Choose the Timex Marlin Automatic 40mm if you value Miyota Automatic technology, Made in Japan (Movement) heritage, and 40mm proportions. At $250–$500, the Automatic Miyota 8205 with 40 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio Pro Trek PRG340-1 and Timex Marlin Automatic 40mm represent two distinct approaches to the timepiece category — the Casio bringing Casio (Japan) tradition while Timex delivers Made in Japan (Movement) engineering.
Frequently Asked Questions
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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.