SpecStudio
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Tudor Bay 58
Stock unknown
Case
- Diameter
- 39mm
- Thickness
- 11.7mm
- Material
- steel
- Water resistance
- 200m
Crystal & dial
- Crystal
- Sapphire
Movement
- Caliber
- Tudor MT5400
- Type
- Automatic
Tudor
Tudor's in-house automatic caliber with COSC chronometer certification and a 70-hour power reserve, produced at the Kenissi manufacture co-owned by Tudor's parent company. Features a silicon balance spring for antimagnetic properties and a traversing balance bridge for enhanced shock resistance. The MT5400 powers the Black Bay Fifty-Eight and represents Tudor's commitment to in-house movement production.
Design language
- Case shape
- round
- Dial style
- sunburst
- Bezel
- rotating_unidirectional
- Bracelet
- rubber_strap
AI-detected from the product image
6 colorways
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RetailNot listed
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Active listings21Across watch forums
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Retail stock & market context
Tudor on the secondhand market
+11.8%
2026 so far · +4.5% to +16.9% · 43 matched watches
+4.0% vs the index
Divers as a group: +6.5% · 338 matched watches
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In a nutshell
The Tudor Bay 58 is an automatic diver watch, with a 39mm steel case, 11.7mm thick, powered by the Tudor MT5400 movement. Water resistance is rated to 200m, under a sapphire crystal.
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