Casio Vintage A168WA vs Seiko Prospex Samurai SRPF03
Casio's chronograph meets Seiko's diver
Quick Verdict
The Casio Vintage A168WA (Under $50) offers Casio Quartz (Battery) precision in the tier below the Seiko Prospex Samurai SRPF03 ($250–$500). The Vintage A168WA measures 36.3mm and is rated 30m (3 ATM). The Prospex Samurai SRPF03 counters with Japanese Movement craftsmanship and 200m (20 ATM) water resistance. Both are exceptional watches for their respective tiers.
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Specifications Compared
| Feature | Casio Vintage A168WA | Seiko Prospex Samurai SRPF03 |
|---|---|---|
| Price | Under $50 | $250–$500 |
| Case Size | 36.3mm | 43.8mm |
| Movement | Quartz Module 3298 | Automatic Caliber 4R35 |
| Caliber Type | Casio Quartz (Battery) | Seiko Automatic, hand-winding and hacking |
| Power Reserve | — | 41 Hours |
| Water Resistance | 30m (3 ATM) | 200m (20 ATM) |
| Crystal | Mineral Glass | Hardlex Crystal |
| Case Material | Stainless Steel & Resin | Stainless Steel |
| Origin | Made in Japan | Japanese Movement |
Category-by-Category Analysis
Design & Aesthetics
Casio's design language vs Seiko's approach
The Casio Vintage A168WA features a Stainless Steel & Resin case at 36.3mm with Mineral Glass protection. The Seiko Prospex Samurai SRPF03 offers Stainless Steel construction at 43.8mm with Hardlex Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Quartz Module 3298 vs Automatic Caliber 4R35
The Vintage A168WA runs the Quartz Module 3298 (Casio Quartz (Battery), standard power reserve) at standard frequency. The Prospex Samurai SRPF03 uses the Automatic Caliber 4R35 (Seiko Automatic, hand-winding and hacking, 41 Hours reserve) at 21,600 vph (3 Hz). The Prospex Samurai SRPF03 offers a longer power reserve.
Wearability & Fit
36.3mm vs 43.8mm — different wrist presence
At 36.3mm, the Vintage A168WA wears more compactly on smaller wrists compared to the Prospex Samurai SRPF03 at 43.8mm. Water resistance differs: 30m (3 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Casio sits in the lower tier
The Casio Vintage A168WA sits at Under $50 and the Seiko Prospex Samurai SRPF03 at $250–$500. On the specs that outlast any price: the Vintage A168WA uses Mineral Glass with a standard reserve, against Hardlex Crystal and 41 Hours on the Prospex Samurai SRPF03. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 200m (20 ATM)
The Vintage A168WA is rated to 30m (3 ATM) while the Prospex Samurai SRPF03 handles 200m (20 ATM). The Prospex Samurai SRPF03 offers superior water resistance.
Our Verdict
Casio
Vintage A168WA
Choose the Casio Vintage A168WA if you prioritize Casio Quartz (Battery) engineering, Made in Japan craftsmanship, and 30m (3 ATM) water resistance. At Under $50, it delivers Quartz Module 3298 with solid power reserve.
Check Price on AmazonSeiko
Prospex Samurai SRPF03
Choose the Seiko Prospex Samurai SRPF03 if you value Seiko Automatic, hand-winding and hacking technology, Japanese Movement heritage, and 43.8mm proportions. At $250–$500, the Automatic Caliber 4R35 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Casio Vintage A168WA and Seiko Prospex Samurai SRPF03 represent two distinct approaches to fine watchmaking — the Casio bringing Made in Japan tradition while Seiko delivers Japanese 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.