TUDOR Black Bay 54 Lagoon Blue Watch M79000

£3,750.00

In stock

Box: Yes | Papers: Yes | Year: 2025
Specifications
  • REFERENCE: M79000
  • CONDITION: Unworn condition with full set
  • GUARANTEE: Sep 2025
  • MATERIAL: Stainless steel
  • DIAL: Blue
  • BRACELET: Five-link stainless steel bracelet
  • DIAMETER: 37mm
  • BEZEL: Uni-directional with mirror-polished steel insert
  • CROWN: Screw-down
  • CRYSTAL: Domed sapphire
  • WATER RESISTANCE: Waterproof to 200m
  • MOVEMENT: Calibre MT5400
  • ACCURACY: -2/+4 sec/day, after casing
  • POWER RESERVE: Approximately 70 hours
  • CLASP: TUDOR “T-fit” clasp

The TUDOR Black Bay 54 Lagoon Blue evokes somewhere warm, where the sun shines onto waves of azure water and white sand beaches, a watch that can do more than tell time, it can shift your mindset. Its magical combination of perfect proportions with its 37mm case, “Lagoon Blue” sand-textured dial, and mirror-polished bezel, as well as its comfortable five-link bracelet transports its wearer to a hammock laced up between two palm trees right where the water meets the sand.

The Black Bay line was conceived with the past in mind, drawing inspiration from TUDOR’s diving heritage. The Black Bay 54 is perhaps the most true-to-form Black Bay to have been created thus far, referencing the Oyster Prince Submariner reference 7922 which is a formidable candidate to draw inspiration from, as it was known to have been evaluated and consequently adopted by the French and US Navies and widely used by diving professionals. The Black Bay 54 follows this tradition with thoroughly modern touches, like a subtle sand-textured dial and a “T-fit” clasp for the perfect fit. And of course, the cutting-edge Manufacture Calibre MT5400.

Condition: Unworn pre-owned condition
Includes: Original box & papers
Guarantee: Warranty valid until 2030
Shipping: Free UK delivery

TUDOR Black Bay 54 “Lagoon Blue” Key Features

Compact Professional Diving Construction

  • 37mm stainless steel case with polished and satin finishes
  • 11.2mm case thickness maintaining elegant proportions
  • 20mm lug width for optimal bracelet presence
  • 60-minute unidirectional bezel with mirror-polished steel insert
  • 200-metre water resistance (660 feet)
  • Domed sapphire crystal
  • Reference: M79000-0001

Manufacture Calibre MT5400

  • Manufacture Calibre MT5400 (COSC certified)
  • Self-winding mechanical movement with bidirectional rotor
  • 70-hour “weekend-proof” power reserve
  • Non-magnetic silicon hairspring
  • Variable inertia balance wheel
  • Hours, minutes, and central seconds functions
  • Swiss manufacture construction

“Lagoon Blue” Design Elements

  • Blue domed dial with sand-textured finish
  • Mirror-polished bezel creating distinctive aesthetic
  • Applied hour markers with luminous coating
  • Snowflake hands with Super-LumiNova
  • Azure water-inspired colour palette
  • Summertime vibes aesthetic
  • Reference to Oyster Prince Submariner 7922

Innovative T-fit Bracelet System

  • Five-link stainless steel bracelet with mixed finishes
  • TUDOR T-fit clasp with rapid adjustment system
  • Five adjustment positions across 8mm window
  • Tool-free instant length adjustment
  • Ceramic ball bearings for smooth closure
  • Screw-down crown with TUDOR rose in relief
  • Five-year transferable guarantee included

The Black Bay 54 Legacy

The Black Bay line was conceived with the past in mind, drawing inspiration from TUDOR’s rich diving heritage spanning nearly seven decades. The Black Bay 54 is perhaps the most true-to-form Black Bay to have been created thus far, referencing the Oyster Prince Submariner reference 7922, a formidable candidate to draw inspiration from, as it was known to have been evaluated and consequently adopted by the French and US Navies and widely used by diving professionals throughout the 1950s and 1960s.

The “Lagoon Blue” variant celebrates TUDOR’s commitment to creating timepieces that shift mindsets and transport wearers beyond mere timekeeping. This magical combination of perfect 37mm proportions, sand-textured blue dial evoking azure waters and white sand beaches, and mirror-polished bezel creates a watch that captures summertime vibes and vacation spirit. The Black Bay 54 follows TUDOR’s diving tradition with thoroughly modern touches, including the innovative T-fit clasp for perfect fit and the cutting-edge Manufacture Calibre MT5400 with 70-hour power reserve.

Perfect For

  • Vintage-sized watch enthusiasts
  • TUDOR Black Bay collectors
  • 37mm diameter preference seekers
  • Blue dial watch specialists
  • Professional and recreational divers
  • Summer aesthetic admirers
  • Manufacture movement devotees
  • 1950s military dive watch heritage appreciators

Frequently Asked Questions

What Makes the 37mm Size Perfect for the Black Bay 54?

The 37mm diameter represents faithful adherence to the vintage proportions of the Oyster Prince Submariner reference 7922, creating authentic connection to TUDOR’s 1950s diving heritage while providing comfortable wearing dimensions suitable for diverse wrist sizes. This compact sizing addresses modern preference for vintage-inspired proportions, offering substantial presence without overwhelming smaller wrists while maintaining appropriate scale for those who appreciate historically accurate dimensions rather than contemporary oversized trends.

The 11.2mm thickness maintains elegant profile while the 20mm lug width ensures the five-link bracelet flows proportionally from the case. For collectors seeking genuine vintage aesthetic without compromising modern movement technology and reliability, the 37mm case delivers period-correct sizing combined with contemporary manufacture excellence. The compact dimensions prove particularly versatile, transitioning seamlessly from diving activities to formal occasions where larger dive watches might appear excessive or inappropriate for refined dress codes.

How Does the “Lagoon Blue” Dial Create Its Distinctive Character?

The “Lagoon Blue” sand-textured dial evokes azure waters and tropical beaches, creating emotional connection to vacation destinations and summertime vibes that transcends typical dive watch functionality. The subtle sand texture provides dimensional depth and visual interest that solid colour dials cannot match, interacting with light to create dynamic surface that changes character throughout the day. This thoughtful finishing transforms the dial into conversation piece that captures the spirit of warm destinations where water meets white sand.

The blue colour choice references both diving heritage and contemporary collecting trends favouring distinctive dial colours beyond traditional black. Combined with the mirror-polished bezel, departing from typical aluminium or ceramic inserts, the “Lagoon Blue” creates sophisticated aesthetic that bridges tool watch functionality and lifestyle timepiece appeal. For wearers seeking dive watch capabilities alongside emotional resonance and visual distinction, the sand-textured blue dial delivers both practical underwater legibility and the ability to shift mindset toward tropical paradise even during daily routines.

What Is Significant About the Mirror-Polished Bezel?

The mirror-polished steel bezel represents bold departure from conventional dive watch design, which typically employs aluminium or ceramic inserts for durability and functionality. This polished finish creates refined aesthetic that distinguishes the Black Bay 54 from more utilitarian dive watches, elevating the timepiece into luxury category while maintaining genuine 200-metre water resistance and unidirectional rotating functionality essential for dive timing. The mirror finish interacts beautifully with the “Lagoon Blue” dial, creating visual cohesion impossible with traditional matte or textured bezels.

The polished bezel connects to vintage TUDOR dive watches that featured similar finishes before aluminium inserts became standard, honouring historical accuracy while creating contemporary statement. The finish requires more maintenance than aluminium alternatives but delivers unmatched elegance and sophisticated presence appropriate to TUDOR’s evolution from pure tool watch manufacturer to creator of luxury sports timepieces. For collectors who appreciate design details that separate limited editions from regular production models, the mirror-polished bezel represents distinctive element that immediately identifies the “Lagoon Blue” variant.

How Does the Calibre MT5400 Enhance the Compact Case?

The Manufacture Calibre MT5400 represents TUDOR’s engineering achievement creating compact movement specifically designed for smaller case diameters while maintaining the 70-hour power reserve characteristic of TUDOR’s modern manufacture calibres. This dedicated small-diameter movement eliminates compromises typically associated with vintage-sized watches, delivering contemporary performance standards including silicon hairspring, variable inertia balance, and COSC chronometer certification within the 37mm case without requiring excessive thickness or reduced power reserve.

The MT5400’s development demonstrates TUDOR’s commitment to vintage sizing as legitimate category rather than niche offering, justifying manufacture movement investment for compact cases serving collectors who prefer period-correct proportions. The 70-hour “weekend-proof” reserve ensures the watch continues running reliably even during extended periods off the wrist, providing practical advantage that vintage references could never deliver. For enthusiasts seeking authentic vintage dimensions combined with modern reliability and performance, the MT5400 represents ideal solution bridging historical aesthetics and contemporary technical expectations.

Why Does the Black Bay 54 Reference the Oyster Prince Submariner 7922?

The Oyster Prince Submariner reference 7922 represents formidable candidate for inspiration, having been evaluated and adopted by both French and US Navies during the 1950s while being widely used by professional divers. This military adoption validates the 7922’s capabilities as genuine professional instrument rather than civilian timepiece with diving pretensions, establishing authentic heritage that modern Black Bay 54 honours through faithful dimensional proportions and design elements including the compact 37mm case and clean dial layout.

The reference 7922 also represents TUDOR’s independent diving watch development separate from Rolex Submariner evolution, celebrating the brand’s distinct identity within professional diving equipment history. The Black Bay 54 continues this tradition through thoroughly modern touches including sand-textured dial, T-fit clasp, and cutting-edge Manufacture Calibre MT5400, demonstrating how historical inspiration can inform contemporary creation without requiring slavish reproduction. For collectors who appreciate authentic diving heritage combined with modern refinement, the Black Bay 54’s connection to reference 7922 provides meaningful context beyond superficial vintage aesthetics.

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