Watch reference library
Tudor Black Bay Fifty-Eight 79030N “BB58”
In production 2018 to present.
The Tudor Black Bay Fifty-Eight 79030N, known as the BB58, is a 39mm stainless steel watch with the calibre MT5402, water resistant to 200 meters, made 2018 to present.
Specifications
- Nickname
- BB58
- Case size
- 39mm
- Case material
- Stainless steel
- Bezel
- Unidirectional rotating, matte black aluminum insert
- Dial
- Black, gilt accents
- Movement
- Tudor manufacture caliber MT5402, automatic, COSC-certified
- Power reserve
- About 70 hours
- Water resistance
- 200 meters
- Crystal
- Domed sapphire
- Bracelet
- Steel, riveted-style links, or leather/fabric strap options
The story
Tudor introduced the Black Bay Fifty-Eight at Baselworld 2018 as a smaller-cased addition to the Black Bay family, at 39mm compared to the 41mm of the standard Black Bay. The name and the reduced case size were chosen to reference the ref. 7924, a compact dive watch Tudor built in 1958, and the model was positioned as a more historically proportioned alternative to the larger Black Bay. The 79030N uses the Caliber MT5402, a shorter version of the movement architecture found in the larger Black Bay's MT5602, built to fit the smaller case while keeping the same 70-hour power reserve and COSC chronometer certification. The dial carries gilt-toned accents and a matte black bezel insert, closely following the vintage-inspired look that made the model one of Tudor's most popular references after launch. Since its introduction, the Black Bay Fifty-Eight has stayed in Tudor's core lineup and has been joined by variants in other materials and colors, as well as by a related Black Bay Fifty-Eight GMT model.
What to check before you buy
Because the Black Bay Fifty-Eight shares much of its visual language with the larger Black Bay, buyers should confirm case diameter is what they expect, since photographs alone can make the 39mm and 41mm models look similar in scale. The riveted-style bracelet is a factory option alongside leather and fabric straps, so buyers should check which configuration is included in a given set. As with other Kenissi-built Tudor manufacture movements, the MT5402 is generally reliable, but buyers should still request service history on any watch several years old.
Buying or selling a 79030N?
Selling one? Text photos to (605) 521-2821 for an offer within hours, or ask for one below. Moda pays by wire or Zelle within 24 hours of receiving the watch, on its own insured label. Rather sell it yourself? Post it in the Moda watch groups and run the listing through the Post Checker first. Buying one from someone you don't know? Moda's middleman service inspects the watch at Moda HQ and the buyer pays the seller only after approving the condition report. When it ships, it goes fully insured through ShipIFS, the shipping vendor Moda uses for its own watches.
Moda Watch Club is the Moda group for luxury watches, and Moda Watch Club: 10K & Under covers watches below that line. Both are free to join with a join code.
Common questions
What does the '58' in Black Bay Fifty-Eight refer to?
It refers to 1958, the year of an early Tudor dive watch reference, ref. 7924, that inspired the smaller 39mm case size of this model.
How does the 79030N differ from the standard 41mm Black Bay?
The main difference is case size, 39mm versus 41mm, along with a proportionally smaller movement, the MT5402, though both use similar dial and bezel design language.
What movement is inside the Black Bay Fifty-Eight?
It uses Tudor's manufacture Caliber MT5402, a self-winding, COSC-certified movement with about 70 hours of power reserve.
Is the 79030N still part of Tudor's current lineup?
Yes, it remains in production and is one of Tudor's most popular current references.
Does the Black Bay Fifty-Eight have a date window?
No, the standard 79030N is a time-only watch without a date function, in keeping with its vintage-inspired design.