Tudor Black Bay Heritage Black Bay Ceramic One for Only Watch

Reference 7921/001CN

About this watch

The Tudor Heritage Black Bay Ceramic One for Only Watch is a masterpiece that combines style, functionality, and heritage in one stunning package. With its sleek black ceramic case and 41mm diameter, this watch exudes modern sophistication while being durable and lightweight due to its titanium, ceramic, and stainless steel construction. The PVD coating adds an extra layer of protection without compromising the sleek finish. At the heart of this timepiece is the Tudor caliber MT5602, a certified COSC automatic movement that beats at 4Hz, ensuring precision and reliability. With a power reserve of 70 hours, you can forget to wind it over the weekend and still expect it to tick away come Monday morning. This watch boasts an impressive water resistance of 200 meters, making it suitable for diving as well as everyday wear. The rotating bezel is functional and designed for divers, while the black dial with stick and dot indexes is easy to read in challenging lighting conditions. When you strap on this watch, you'll be pleasantly surprised by its comfort and weight. As a one-of-a-kind piece, it's not just a timepiece but also a piece of history, telling a story and having intrinsic value. This limited edition watch reflects Tudor's commitment to quality and innovation, making it a worthy investment for watch enthusiasts and collectors.
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Key Features

  • Tudor caliber MT5602 automatic movement
  • Ceramic case with PVD coating
  • 200m water resistance
  • 41mm diameter
  • Rotating dive bezel
  • Black dial with stick and dot indexes
  • Proprietary hands

Specifications

Brand
Tudor
Family
Black Bay
Model
Heritage Black Bay Ceramic One for Only Watch
Reference
7921/001CN
Movement Features
  • Hours, Minutes, Seconds
  • Chronometer
Case
41mm
Dial Color
Black
Crystal
Sapphire
Water Resistance
200

Current Listings

[WTS] New 2026 Tudor Black Bay 58 GMT Jubilee Stickered 5/26 7939G1A0NRU “Coke” $4,999.00

New 2026 Tudor Black Bay 58 GMT Jubilee Stickered 5/26 7939G1A0NRU “Coke” $4,999.00

Tudor - 7939G1A0NRU · $4,999
This listing is for a brand new 2026 Tudor Black Bay 58 GMT Jubilee Stickered watch, featuring a beautiful black domed gilt dial and a 39mm stainless steel case with a five-link jubilee bracelet.

  • Condition: 10/10 Unworn-stickered
  • Movement: MT5450-U (COSC-METAS)
  • Depth rating: 200m
  • Power reserve: 65-hour
Posted at
May 21, 2026, 2:03 PM
Active
[WTS] New Tudor Black Bay 54 Blue Rubber 37mm 5/26 Ref. 79000B *$3,799.00*

New Tudor Black Bay 54 Blue Rubber 37mm 5/26 Ref. 79000B *$3,799.00*

Tudor - 79000B · $3,799
This new Tudor Black Bay 54 features a beautiful blue domed dial and is self-winding, with a 70-hour power reserve.

  • Condition: 10/10, unworn stickered
  • Water Resistance: 200m
  • Power Reserve: 70-hour
  • Movement: MT5400 (COSC)
Posted at
May 21, 2026, 2:01 PM
Active
[WTS] Tudor Black Bay One 39mm Blue Diamond Dial 2026, $3800

Tudor Black Bay One 39mm Blue Diamond Dial 2026, $3800

Tudor Black Bay One with a 39mm blue diamond dial for sale. The watch is in new condition and comes with its original box, warranty, and manuals.

  • Condition: New Condition
  • Case Diameter: 39mm
  • Dial Color: blue diamond
Posted at
May 21, 2026, 11:13 AM
Active
[WTS] 2026 Tudor Black Bay Chronograph “Carbon 26” 79377KN — Brand New Condition, Box & Papers

2026 Tudor Black Bay Chronograph “Carbon 26” 79377KN — Brand New Condition, Box & Papers

The Tudor Black Bay Chronograph “Carbon 25” features a lightweight carbon composite case, white dial with black subdials, and a COSC-certified automatic chronograph movement.

  • Condition: Brand new
  • Case material: carbon composite
  • Movement type: COSC-certified automatic chronograph
Posted at
May 21, 2026, 9:14 AM
Active
[WTS] TUDOR Black Bay 41mm "Ceramic" ref.79210CNU (Full Set) 2024 w/ Warranty 💲3️⃣8️⃣0️⃣0️⃣➕🏷️

TUDOR Black Bay 41mm "Ceramic" ref.79210CNU (Full Set) 2024 w/ Warranty 💲3️⃣8️⃣0️⃣0️⃣➕🏷️

Tudor - 79210CNU · $3,800
This TUDOR Black Bay features a full ceramic case, METAS-certified movement, and sapphire display caseback, making it a modern and tactical timepiece suitable for serious collectors.

  • Condition: Immaculate, minimal hairlines on the clasp
  • Case size: 41mm diameter
  • Movement: Tudor Manufacture Calibre MT5602-1U (METAS Certified)
  • Dial type: Matte black with luminescent markers
Posted at
May 20, 2026, 11:41 PM
Active
[WTS] Tudor Black Bay Chrono GMT Ref. 79470 (2022) Full Set Very Good Condition

Tudor Black Bay Chrono GMT Ref. 79470 (2022) Full Set Very Good Condition

Tudor - 79470 · $3,899
This Tudor Black Bay Chrono features the iconic chronograph design, sporty yet versatile look, and Tudor's reliable automatic movement. It comes with a full set including original boxes, warranty card, manuals, hang tag, and full links.

  • Condition: Very good condition
  • Case size: 41mm diameter
  • Movement: Tudor's reliable automatic movement
  • Water resistance: null
Posted at
May 20, 2026, 11:20 PM
Active
[WTS] Tudor Black Bay Harrods Special Edition 41mm | Ref. 79230G | Complete Set | $4,100

Tudor Black Bay Harrods Special Edition 41mm | Ref. 79230G | Complete Set | $4,100

Tudor - 79230G · $4,100
This 2018 Tudor Black Bay Harrods Special Edition features a stainless steel case, green aluminum bezel, black gilt dial, and in-house Caliber MT5602.

  • Condition: Excellent pre-owned with minor signs of wear
  • Case size: 41mm diameter
  • Water resistance: 200m depth rating
  • Power reserve: 70 hours
Posted at
May 20, 2026, 4:55 PM
Active