Seiko Prospex Samurai SRPL13 vs Timex Marlin Automatic 40mm
Seiko's diver meets Timex's timepiece
Quick Verdict
The Timex Marlin Automatic 40mm ($250–$500) delivers Miyota Automatic technology in the tier below the Seiko Prospex Samurai SRPL13 ($500–$1,000). The Marlin Automatic 40mm measures 40mm and is rated 30m (3 ATM). The Prospex Samurai SRPL13 justifies its premium with Made in Japan heritage and Automatic Caliber 4R35. Both represent excellent choices in the luxury watch category.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Seiko Prospex Samurai SRPL13 | Timex Marlin Automatic 40mm |
|---|---|---|
| Price | $500–$1,000 | $250–$500 |
| Case Size | 41.7mm | 40mm |
| Movement | Automatic Caliber 4R35 | Automatic Miyota 8205 |
| Caliber Type | Seiko In-House Automatic | Miyota Automatic |
| Power Reserve | 41 Hours | 40 Hours |
| Water Resistance | 200m (20 ATM) | 30m (3 ATM) |
| Crystal | Hardlex Crystal | Mineral Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Made in Japan (Movement) |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Timex's approach
The Seiko Prospex Samurai SRPL13 features a Stainless Steel case at 41.7mm with Hardlex Crystal 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
Automatic Caliber 4R35 vs Automatic Miyota 8205
The Prospex Samurai SRPL13 runs the Automatic Caliber 4R35 (Seiko In-House Automatic, 41 Hours power reserve) at 21,600 vph (3 Hz) frequency. The Marlin Automatic 40mm uses the Automatic Miyota 8205 (Miyota Automatic, 40 Hours reserve) at 21,600 vph (3 Hz). The Prospex Samurai SRPL13 edges ahead on power reserve.
Wearability & Fit
41.7mm vs 40mm — different wrist presence
At 41.7mm, the Prospex Samurai SRPL13 has a bolder wrist presence compared to the Marlin Automatic 40mm at 40mm. Water resistance differs: 200m (20 ATM) vs 30m (3 ATM).
Value & Cost of Ownership
Timex sits in the lower tier
The Seiko Prospex Samurai SRPL13 sits at $500–$1,000 and the Timex Marlin Automatic 40mm at $250–$500. On the specs that outlast any price: the Prospex Samurai SRPL13 uses Hardlex Crystal with 41 Hours, against Mineral Crystal and 40 Hours on the Marlin Automatic 40mm. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 30m (3 ATM)
The Prospex Samurai SRPL13 is rated to 200m (20 ATM) while the Marlin Automatic 40mm handles 30m (3 ATM). The Prospex Samurai SRPL13 is better suited for water activities.
Our Verdict
Seiko
Prospex Samurai SRPL13
Choose the Seiko Prospex Samurai SRPL13 if you prioritize Seiko In-House Automatic engineering, Made in Japan craftsmanship, and 200m (20 ATM) water resistance. At $500–$1,000, it delivers Automatic Caliber 4R35 with 41 Hours 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 Seiko Prospex Samurai SRPL13 and Timex Marlin Automatic 40mm represent two distinct approaches to fine watchmaking — the Seiko bringing Made in Japan tradition while Timex delivers Made in Japan (Movement) engineering.
Frequently Asked Questions
More Comparisons
Tag Heuer Carrera Chronograph vs Seiko Prospex Samurai SRPL13
Tag Heuer's chronograph meets Seiko's diver
Tag Heuer Carrera Chronograph vs Timex Marlin Automatic 40mm
Tag Heuer's chronograph meets Timex's timepiece
Tissot PRX Powermatic 80 vs Seiko Prospex Samurai SRPL13
Tissot's timepiece meets Seiko's diver
Explore These Watches
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.