Tudor
Black Bay Steel
79730
The Black Bay distilled — 41 mm of in-house steel diver authority.
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Overview
The Tudor Black Bay Steel, reference 79730, represents the marque's commitment to a no-compromise, in-house diver at the core of the Black Bay family. Introduced in 2017, it pairs a 41 mm stainless steel case with Tudor's own MT5612 movement, consolidating the line's heritage-dive aesthetic with modern manufacture credentials. Its black dial and characteristic "snowflake" hand set anchor it firmly in the visual language that has defined the Black Bay since its revival.
History
The Black Bay line was launched in the early 2010s as Tudor's reinterpretation of its storied mid-century dive watches, drawing directly on references from the brand's own archives. Reference 79730 arrived in 2017 as the steel-cased, black-dial expression of that lineage, distinguished by the fitment of the in-house MT5612 calibre — a significant step for a line that had previously relied on third-party movements. The reference remained in production until 2023, during which time it became one of the most recognised entry points into serious tool-watch collecting. Its run coincided with a broader resurgence of collector interest in Tudor as an independent manufacture rather than simply a Rolex sister brand.
Notable points
- The MT5612 is a manufacture calibre developed entirely in-house by Tudor, beating at 28,800 vph and offering a power reserve of approximately 70 hours.
- At 41 mm, the 79730 occupies a considered middle ground — larger than vintage Tudor divers yet more wearable than many contemporary sport watches.
- The black dial is paired with the distinctive "snowflake" hour and minute hands, a design element revived directly from Tudor's professional dive references of the 1960s and 1970s.
- The stainless steel case carries a screw-down crown and water resistance suited to serious dive use, maintaining the functional brief of the Black Bay line.
- Reference 79730 was offered on both a stainless steel bracelet and a fabric strap, giving collectors meaningful versatility in how the watch is presented on the wrist.
Specifications
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