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] Tudor Black Bay 41 S&G Strap m79733n 79733 Steel and Gold 41mm $2,450

Tudor Black Bay 41 S&G Strap m79733n 79733 Steel and Gold 41mm $2,450

Tudor - M79733N 79733 · $2,450
This Tudor Black Bay 41 S&G is a 41mm watch with a late 2019 production date. It comes with a full set, including box and papers, and has been previously polished.

  • Condition: Pre-owned, signs of use on the strap
  • Case size: 41mm
Posted at
Oct 17, 2025, 9:48 PM
Active
[WTS] Tudor Black Bay Bronze Ref.79250BA / Box & Card  / $2900

Tudor Black Bay Bronze Ref.79250BA / Box & Card / $2900

Tudor - 79250BA · $2,900
This is a Tudor Black Bay Bronze watch with a slate grey dial and a 43mm bronze case. It features a bronze-coloured PVD-treated steel case back and satin finish. The watch comes with its box and card.

  • Condition: very good pre-owned
  • Case size: 43mm diameter
Posted at
Oct 17, 2025, 9:13 PM
Active
[WTS] Tudor Black Bay Bronze 79250BA

Tudor Black Bay Bronze 79250BA

Tudor - 79250BA · $4,500
  • Material: bronze
Posted at
Oct 17, 2025, 4:54 PM
Active
[WTS] New 2025 Tudor Black Bay 68 Blue dial 5/25 Ref# M7943A1A0NU $3,849.00

New 2025 Tudor Black Bay 68 Blue dial 5/25 Ref# M7943A1A0NU $3,849.00

Tudor - M7943A1A0NU · $3,849
New 2025 Tudor Black Bay 68 with a beautiful blue domed dial and automatic self-winding movement, featuring a 43mm stainless steel case and a 70-hour power reserve.

  • Condition: 10/10 unworn
  • Diameter: 43mm
  • Movement: MT5601-U METAS/COSC
  • Water Resistance: 200M
Posted at
Oct 17, 2025, 2:09 PM
Active
[WTS] Tudor Black Bay 54 Lagoon Blue 08/2025 Box And Papers Ref M79000-0001

Tudor Black Bay 54 Lagoon Blue 08/2025 Box And Papers Ref M79000-0001

Tudor - M79000-0001 · $5,600
The Tudor Black Bay 54 Lagoon Blue is a 2025 release that reimagines vintage dive watch heritage with a modern twist, featuring a compact stainless steel case and vibrant lagoon blue dial.

  • Case Size: 37mm diameter
  • Water Resistance: not specified
Posted at
Oct 17, 2025, 1:53 PM
Active
[WTS] Burgundy Tudor Black Bay 79220R Smiley Dial | Near Mint Condition (Full Set) | $3200

Burgundy Tudor Black Bay 79220R Smiley Dial | Near Mint Condition (Full Set) | $3200

Tudor - 79220R · $3,200
The Tudor Black Bay 79220R 'Smiley' is a milestone piece in modern Tudor history, released in 2012 to debut the iconic Black Bay line. It features a modified ETA 2824 movement and a classic design blending vintage dive watch aesthetics with modern appeal.

  • Condition: Near mint condition
  • Movement: modified ETA 2824
  • Depth rating: 200m water resistance
  • Thickness: 12.7mm
Posted at
Oct 17, 2025, 10:31 AM
Active
[WTS][US] Tudor Black Bay Pro - Black Dial - 39mm - M79470

[US] Tudor Black Bay Pro - Black Dial - 39mm - M79470

Tudor - M79470 · $2,525
Tudor Black Bay Pro watch with a black dial and 39mm case size. Functions perfectly mechanically.

  • Condition: Great condition with minor hairlines
  • Case size: 39mm
  • Diameter: 39mm
Posted at
Oct 17, 2025, 8:11 AM
Active
[WTS] Tudor Black Bay GMT 39mm “Coke” M7939G1A0NRU - 2024 Box and Papers

Tudor Black Bay GMT 39mm “Coke” M7939G1A0NRU - 2024 Box and Papers

Tudor - M7939G1ANRU-0001 · $3,999
2024 Tudor Black Bay GMT 39mm "Coke" in excellent condition, with a 2024 card and double-boxed packaging.

  • Condition: Pre-Owned, slight wear on bracelet and case
  • Case size: 39mm diameter
  • Bracelet length: 11 Links
Posted at
Oct 17, 2025, 1:07 AM
Active
[WTS] Tudor Black Bay Bronze 43 M79250BA Slate Grey Dial - $1999 SHIPPED

Tudor Black Bay Bronze 43 M79250BA Slate Grey Dial - $1999 SHIPPED

Tudor - M79250BA · $1,999
43mm Tudor Black Bay Bronze with slate grey dial, featuring a bronze case with heavy patina and a leather strap with lots of wear.

  • Condition: Good condition overall with heavy patina on the bronze case, small scratch on bezel, and worn leather strap
  • Case size: 43mm
  • Box contents: inner & outer box, extra sailcloth strap
Posted at
Oct 16, 2025, 4:47 PM
Active