Bulova Devil Diver Oceanographer 96B350 vs Seiko 5 Sports 5KX
Bulova's diver meets Seiko's timepiece
Quick Verdict
The Seiko 5 Sports 5KX ($250–$500) delivers Seiko In-House Automatic technology in the tier below the Bulova Devil Diver Oceanographer 96B350 ($500–$1,000). The 5 Sports 5KX measures 42.5mm and is rated 100m (10 ATM). The Devil Diver Oceanographer 96B350 justifies its premium with Made in Japan (Movement) heritage and Automatic Miyota 8215. Both represent excellent choices in the luxury watch category.
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Specifications Compared
| Feature | Bulova Devil Diver Oceanographer 96B350 | Seiko 5 Sports 5KX |
|---|---|---|
| Price | $500–$1,000 | $250–$500 |
| Case Size | 41mm | 42.5mm |
| Movement | Automatic Miyota 8215 | Automatic Caliber 4R36 |
| Caliber Type | Miyota Automatic | Seiko In-House Automatic |
| Power Reserve | 42 Hours | 41 Hours |
| Water Resistance | 200m (20 ATM) | 100m (10 ATM) |
| Crystal | Sapphire Crystal | Hardlex Crystal |
| Case Material | Stainless Steel | Stainless Steel |
| Origin | Made in Japan (Movement) | Made in Japan |
Category-by-Category Analysis
Design & Aesthetics
Bulova's design language vs Seiko's approach
The Bulova Devil Diver Oceanographer 96B350 features a Stainless Steel case at 41mm with Sapphire Crystal protection. The Seiko 5 Sports 5KX offers Stainless Steel construction at 42.5mm with Hardlex Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Miyota 8215 vs Automatic Caliber 4R36
The Devil Diver Oceanographer 96B350 runs the Automatic Miyota 8215 (Miyota Automatic, 42 Hours power reserve) at 21,600 vph (3 Hz) frequency. The 5 Sports 5KX uses the Automatic Caliber 4R36 (Seiko In-House Automatic, 41 Hours reserve) at 21,600 vph (3 Hz). The Devil Diver Oceanographer 96B350 edges ahead on power reserve.
Wearability & Fit
41mm vs 42.5mm — different wrist presence
At 41mm, the Devil Diver Oceanographer 96B350 wears more compactly on smaller wrists compared to the 5 Sports 5KX at 42.5mm. Water resistance differs: 200m (20 ATM) vs 100m (10 ATM).
Value & Cost of Ownership
Seiko sits in the lower tier
The Bulova Devil Diver Oceanographer 96B350 sits at $500–$1,000 and the Seiko 5 Sports 5KX at $250–$500. On the specs that outlast any price: the Devil Diver Oceanographer 96B350 uses Sapphire Crystal with 42 Hours, against Hardlex Crystal and 41 Hours on the 5 Sports 5KX. Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 100m (10 ATM)
The Devil Diver Oceanographer 96B350 is rated to 200m (20 ATM) while the 5 Sports 5KX handles 100m (10 ATM). The Devil Diver Oceanographer 96B350 is better suited for water activities.
Our Verdict
Bulova
Devil Diver Oceanographer 96B350
Choose the Bulova Devil Diver Oceanographer 96B350 if you prioritize Miyota Automatic engineering, Made in Japan (Movement) craftsmanship, and 200m (20 ATM) water resistance. At $500–$1,000, it delivers Automatic Miyota 8215 with 42 Hours power reserve.
Check Price on AmazonSeiko
5 Sports 5KX
Choose the Seiko 5 Sports 5KX if you value Seiko In-House Automatic technology, Made in Japan heritage, and 42.5mm proportions. At $250–$500, the Automatic Caliber 4R36 with 41 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Bulova Devil Diver Oceanographer 96B350 and Seiko 5 Sports 5KX represent two distinct approaches to fine watchmaking — the Bulova bringing Made in Japan (Movement) tradition while Seiko delivers Made in Japan 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.