Seiko Prospex Alpinist vs Seiko Prospex Samurai SRPL13
Two divers compared — ~$620 vs ~$590
Quick Verdict
The Seiko Prospex Samurai SRPL13 (~$590) delivers Seiko In-House Automatic technology at $30 less than the Seiko Prospex Alpinist (~$620). The Prospex Alpinist justifies its premium with Made in Japan heritage and Automatic Caliber 6R35. Both represent excellent choices in the diver category.
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Specifications Compared
| Feature | Seiko Prospex Alpinist | Seiko Prospex Samurai SRPL13 |
|---|---|---|
| Price | ~$620 | ~$590 |
| Case Size | 39.5mm | 43.8mm |
| Movement | Automatic Caliber 6R35 | Automatic Caliber 4R35 |
| Caliber Type | In-House Automatic Manufacture | Seiko In-House Automatic |
| Power Reserve | 70 Hours | 41 Hours |
| Water Resistance | 200m (20 ATM) | 200m (20 ATM) |
| Crystal | Sapphire with Cyclops | Hardlex Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Seiko's design language vs Seiko's approach
Movement & Performance
Automatic Caliber 6R35 vs Automatic Caliber 4R35
Wearability & Fit
39.5mm vs 43.8mm — different wrist presence
Value & Cost of Ownership
Seiko is $30 more affordable
Water Resistance
200m (20 ATM) vs 200m (20 ATM)
Our Verdict
Seiko
Prospex Alpinist
Choose the Seiko Prospex Alpinist if you prioritize In-House Automatic Manufacture engineering, Made in Japan craftsmanship, and 200m (20 ATM) water resistance. At ~$620, it delivers Automatic Caliber 6R35 with 70 Hours power reserve.
Check Price on AmazonSeiko
Prospex Samurai SRPL13
Choose the Seiko Prospex Samurai SRPL13 if you value Seiko In-House Automatic technology, Made in Japan heritage, and 43.8mm proportions. At ~$590, the Automatic Caliber 4R35 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Seiko Prospex Alpinist and Seiko Prospex Samurai SRPL13 represent two distinct approaches to the diver category — the Seiko bringing Made in Japan tradition while Seiko delivers Made in Japan engineering.

