Updated
Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) vs Bulova Devil Diver Oceanographer 96B350
Two divers compared — $10,000–$25,000 vs $500–$1,000
Quick Verdict
The Bulova Devil Diver Oceanographer 96B350 ($500–$1,000) delivers Miyota Automatic technology in the tier below the Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) ($10,000–$25,000). The Devil Diver Oceanographer 96B350 measures 41mm and is rated 200m (20 ATM). The Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) justifies its premium with Swiss Made heritage and Automatic, Blancpain calibre 1315DD, silicon balance spring. Both represent excellent choices in the diver category.
Transparency — We earn a small commission on purchases made through our Amazon links. This doesn't affect our editorial independence.
Blancpain
Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap)
$10,000–$25,000
Specifications Compared
| Feature | Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) | Bulova Devil Diver Oceanographer 96B350 |
|---|---|---|
| Price | $10,000–$25,000 | $500–$1,000 |
| Case Size | 43mm | 41mm |
| Movement | Automatic, Blancpain calibre 1315DD, silicon balance spring | Automatic Miyota 8215 |
| Caliber Type | 1315DD, automatic | Miyota Automatic |
| Power Reserve | About 120 hours (5 days) | 42 Hours |
| Water Resistance | 300m (30 ATM) | 200m (20 ATM) |
| Crystal | Sapphire Crystal | Sapphire Crystal |
| Case Material | Stainless steel, black ceramic unidirectional bezel with Liquidmetal markers, sapphire caseback | Stainless Steel |
| Origin | Swiss Made | Made in Japan (Movement) |
Category-by-Category Analysis
Design & Aesthetics
Blancpain's design language vs Bulova's approach
The Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) features a Stainless steel, black ceramic unidirectional bezel with Liquidmetal markers, sapphire caseback case at 43mm with Sapphire Crystal protection. The Bulova Devil Diver Oceanographer 96B350 offers Stainless Steel construction at 41mm with Sapphire Crystal. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic, Blancpain calibre 1315DD, silicon balance spring vs Automatic Miyota 8215
The Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) runs the Automatic, Blancpain calibre 1315DD, silicon balance spring (1315DD, automatic, About 120 hours (5 days) power reserve) at standard frequency. The Devil Diver Oceanographer 96B350 uses the Automatic Miyota 8215 (Miyota Automatic, 42 Hours reserve) at 21,600 vph (3 Hz). The Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) edges ahead on power reserve.
Wearability & Fit
43mm vs 41mm — different wrist presence
At 43mm, the Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) has a bolder wrist presence compared to the Devil Diver Oceanographer 96B350 at 41mm. Water resistance differs: 300m (30 ATM) vs 200m (20 ATM).
Value & Cost of Ownership
Bulova sits in the lower tier
The Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) sits at $10,000–$25,000 and the Bulova Devil Diver Oceanographer 96B350 at $500–$1,000. On the specs that outlast any price: the Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) uses Sapphire Crystal with About 120 hours (5 days), against Sapphire Crystal and 42 Hours on the Devil Diver Oceanographer 96B350. Service intervals are typically 5-7 years for both.
Water Resistance
300m (30 ATM) vs 200m (20 ATM)
The Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) is rated to 300m (30 ATM) while the Devil Diver Oceanographer 96B350 handles 200m (20 ATM). The Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) is better suited for water activities.
Our Verdict
Blancpain
Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap)
Choose the Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) if you prioritize 1315DD, automatic engineering, Swiss Made craftsmanship, and 300m (30 ATM) water resistance. At $10,000–$25,000, it delivers Automatic, Blancpain calibre 1315DD, silicon balance spring with About 120 hours (5 days) power reserve.
Check Price on AmazonBulova
Devil Diver Oceanographer 96B350
Choose the Bulova Devil Diver Oceanographer 96B350 if you value Miyota Automatic technology, Made in Japan (Movement) heritage, and 41mm proportions. At $500–$1,000, the Automatic Miyota 8215 with 42 Hours power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap) and Bulova Devil Diver Oceanographer 96B350 represent two distinct approaches to the diver category — the Blancpain bringing Swiss Made tradition while Bulova delivers Made in Japan (Movement) engineering.
Frequently Asked Questions
More Comparisons
Tag Heuer Carrera Chronograph vs Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap)
Tag Heuer's chronograph meets Blancpain's diver
Tag Heuer Carrera Chronograph vs Bulova Devil Diver Oceanographer 96B350
Tag Heuer's chronograph meets Bulova's diver
Tissot PRX Powermatic 80 vs Blancpain Fifty Fathoms Bathyscaphe Day Date 70s (steel, gradient dial, vintage calf strap)
Tissot's timepiece meets Blancpain'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.