Bulova Classic Automatic 98A139 vs Seiko Prospex Samurai SRPL13
Bulova's timepiece meets Seiko's diver
Quick Verdict
The Bulova Classic Automatic 98A139 ($250–$500) offers Self-Winding Automatic precision in the tier below the Seiko Prospex Samurai SRPL13 ($500–$1,000). The Classic Automatic 98A139 measures 45mm and is rated 30m (3 ATM). The Prospex Samurai SRPL13 counters with Made in Japan craftsmanship and 200m (20 ATM) water resistance. Both are exceptional watches for their respective tiers.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Specifications Compared
| Feature | Bulova Classic Automatic 98A139 | Seiko Prospex Samurai SRPL13 |
|---|---|---|
| Price | $250–$500 | $500–$1,000 |
| Case Size | 45mm | 41.7mm |
| Movement | Automatic, 21 Jewels | Automatic Caliber 4R35 |
| Caliber Type | Self-Winding Automatic | Seiko In-House Automatic |
| Power Reserve | — | 41 Hours |
| Water Resistance | 30m (3 ATM) | 200m (20 ATM) |
| Crystal | Domed Crystal | Hardlex Crystal |
| Case Material | Black Ion-Plated Stainless Steel | Stainless Steel |
| Origin | Japanese Movement | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Bulova's design language vs Seiko's approach
The Bulova Classic Automatic 98A139 features a Black Ion-Plated Stainless Steel case at 45mm with Domed Crystal protection. The Seiko Prospex Samurai SRPL13 offers Stainless Steel construction at 41.7mm with Hardlex Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, 21 Jewels vs Automatic Caliber 4R35
The Classic Automatic 98A139 runs the Automatic, 21 Jewels (Self-Winding Automatic, standard power reserve) at standard frequency. The Prospex Samurai SRPL13 uses the Automatic Caliber 4R35 (Seiko In-House Automatic, 41 Hours reserve) at 21,600 vph (3 Hz). The Prospex Samurai SRPL13 offers a longer power reserve.
Wearability & Fit
45mm vs 41.7mm — different wrist presence
At 45mm, the Classic Automatic 98A139 has a bolder wrist presence compared to the Prospex Samurai SRPL13 at 41.7mm. Water resistance differs: 30m (3 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Bulova sits in the lower tier
The Bulova Classic Automatic 98A139 sits at $250–$500 and the Seiko Prospex Samurai SRPL13 at $500–$1,000. On the specs that outlast any price: the Classic Automatic 98A139 uses Domed Crystal with a standard reserve, against Hardlex Crystal and 41 Hours on the Prospex Samurai SRPL13. Service intervals are typically 5-7 years for both.
Water Resistance
30m (3 ATM) vs 200m (20 ATM)
The Classic Automatic 98A139 is rated to 30m (3 ATM) while the Prospex Samurai SRPL13 handles 200m (20 ATM). The Prospex Samurai SRPL13 offers superior water resistance.
Our Verdict
Bulova
Classic Automatic 98A139
Choose the Bulova Classic Automatic 98A139 if you prioritize Self-Winding Automatic engineering, Japanese Movement craftsmanship, and 30m (3 ATM) water resistance. At $250–$500, it delivers Automatic, 21 Jewels with solid 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 41.7mm proportions. At $500–$1,000, the Automatic Caliber 4R35 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Bulova Classic Automatic 98A139 and Seiko Prospex Samurai SRPL13 represent two distinct approaches to fine watchmaking — the Bulova bringing Japanese Movement tradition while Seiko delivers Made in Japan engineering.
Frequently Asked Questions
More Comparisons
Tag Heuer Carrera Chronograph vs Bulova Classic Automatic 98A139
Tag Heuer's chronograph meets Bulova's timepiece
Tag Heuer Carrera Chronograph vs Seiko Prospex Samurai SRPL13
Tag Heuer's chronograph meets Seiko's diver
Tissot PRX Powermatic 80 vs Bulova Classic Automatic 98A139
Two timepieces compared — $500–$1,000 vs $250–$500
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.