Updated
Tudor Black Bay 58 vs Blancpain Fifty Fathoms 45mm (titanium, blue dial)
Two divers compared — $2,500–$5,000 vs $10,000–$25,000
Quick Verdict
The Tudor Black Bay 58 ($2,500–$5,000) offers In-House Automatic Manufacture (Kenissi) precision in the tier below the Blancpain Fifty Fathoms 45mm (titanium, blue dial) ($10,000–$25,000). The Black Bay 58 measures 39mm and is rated 200m (20 ATM). The Fifty Fathoms 45mm (titanium, blue dial) counters with Swiss Made craftsmanship and 300m (30 ATM) water resistance. Both are exceptional divers for their respective tiers.
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Specifications Compared
| Feature | Tudor Black Bay 58 | Blancpain Fifty Fathoms 45mm (titanium, blue dial) |
|---|---|---|
| Price | $2,500–$5,000 | $10,000–$25,000 |
| Case Size | 39mm | 45mm |
| Movement | Automatic Manufacture Calibre MT5402 | Automatic, Blancpain Calibre 1315 |
| Caliber Type | In-House Automatic Manufacture (Kenissi) | Blancpain 1315, three barrels, silicon balance spring |
| Power Reserve | 70 Hours | About 120 hours (five days) |
| Water Resistance | 200m (20 ATM) | 300m (30 ATM) |
| Crystal | Domed Sapphire | Sapphire Crystal, sapphire bezel insert |
| Case Material | 316L Stainless Steel | Titanium |
| Origin | Swiss Made | Swiss Made |
Category-by-Category Analysis
Design & Aesthetics
Tudor's design language vs Blancpain's approach
The Tudor Black Bay 58 features a 316L Stainless Steel case at 39mm with Domed Sapphire protection. The Blancpain Fifty Fathoms 45mm (titanium, blue dial) offers Titanium construction at 45mm with Sapphire Crystal, sapphire bezel insert. Both represent their brand's distinct design philosophy and heritage.
Movement & Performance
Automatic Manufacture Calibre MT5402 vs Automatic, Blancpain Calibre 1315
The Black Bay 58 runs the Automatic Manufacture Calibre MT5402 (In-House Automatic Manufacture (Kenissi), 70 Hours power reserve) at 28,800 vph (4 Hz) frequency. The Fifty Fathoms 45mm (titanium, blue dial) uses the Automatic, Blancpain Calibre 1315 (Blancpain 1315, three barrels, silicon balance spring, About 120 hours (five days) reserve) at standard. The Fifty Fathoms 45mm (titanium, blue dial) offers a longer power reserve.
Wearability & Fit
39mm vs 45mm — different wrist presence
At 39mm, the Black Bay 58 wears more compactly on smaller wrists compared to the Fifty Fathoms 45mm (titanium, blue dial) at 45mm. Water resistance differs: 200m (20 ATM) vs 300m (30 ATM).
Value & Cost of Ownership
Tudor sits in the lower tier
The Tudor Black Bay 58 sits at $2,500–$5,000 and the Blancpain Fifty Fathoms 45mm (titanium, blue dial) at $10,000–$25,000. On the specs that outlast any price: the Black Bay 58 uses Domed Sapphire with 70 Hours, against Sapphire Crystal, sapphire bezel insert and About 120 hours (five days) on the Fifty Fathoms 45mm (titanium, blue dial). Service intervals are typically 5-7 years for both.
Water Resistance
200m (20 ATM) vs 300m (30 ATM)
The Black Bay 58 is rated to 200m (20 ATM) while the Fifty Fathoms 45mm (titanium, blue dial) handles 300m (30 ATM). The Fifty Fathoms 45mm (titanium, blue dial) offers superior water resistance.
Our Verdict
Tudor
Black Bay 58
Choose the Tudor Black Bay 58 if you prioritize In-House Automatic Manufacture (Kenissi) engineering, Swiss Made craftsmanship, and 200m (20 ATM) water resistance. At $2,500–$5,000, it delivers Automatic Manufacture Calibre MT5402 with 70 Hours power reserve.
View the dossierBlancpain
Fifty Fathoms 45mm (titanium, blue dial)
Choose the Blancpain Fifty Fathoms 45mm (titanium, blue dial) if you value Blancpain 1315, three barrels, silicon balance spring technology, Swiss Made heritage, and 45mm proportions. At $10,000–$25,000, the Automatic, Blancpain Calibre 1315 with About 120 hours (five days) power reserve makes it a compelling choice.
Check Price on AmazonThe Bottom Line
The Tudor Black Bay 58 and Blancpain Fifty Fathoms 45mm (titanium, blue dial) represent two distinct approaches to the diver category — the Tudor bringing Swiss Made tradition while Blancpain delivers Swiss Made 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.