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 54 - $3299

Tudor Black Bay 54 - $3299

Tudor - 79000N · $3,299
This Tudor Black Bay 54 is a high-end watch with a great condition and running at a precise time.

  • Condition: great condition
Posted at
May 22, 2026, 9:54 PM
Active
[WTS] Tudor Black Bay Blue 79220B, The Purest Expression of the Line

Tudor Black Bay Blue 79220B, The Purest Expression of the Line

Tudor - 79220B · $2,650
The Tudor Black Bay Blue is a bold yet classic watch with a vintage-inspired design and modern reliability. It features a matte black dial and bezel, paired with classic snowflake hands.

  • Condition: great condition, showing only light signs of normal wear
  • Case size: 41 mm diameter
  • Water resistance: 200m depth rating
  • Movement: ETA automatic movement
Posted at
May 22, 2026, 8:34 PM
Active
[WTS] Tudor Black Bay 54 “Blue Lagoon” - Complete Set

Tudor Black Bay 54 “Blue Lagoon” - Complete Set

A complete set of the Tudor Black Bay 54 "Blue Lagoon" with a blue dial, 37mm case, and classic Tudor look.

  • Condition: Complete new set with little wear
  • Case Size: 37mm diameter
Posted at
May 22, 2026, 5:45 PM
Active
[WTS] New 2026 Tudor Black Bay 58 Black/Gilt 4/26 Ref# 79030N $3,699.00

New 2026 Tudor Black Bay 58 Black/Gilt 4/26 Ref# 79030N $3,699.00

Tudor - 79030N · $3,699
This 2026 Tudor Black Bay 58 features a black domed dial, automatic self-winding movement, and a stainless steel riveted bracelet.

  • Condition: Unworn
  • Case size: 39mm diameter
  • Bracelet type: stainless steel riveted bracelet
  • Water resistance: 200M depth rating
Posted at
May 22, 2026, 1:53 PM
Active
[WTS] 2022 Tudor Black Bay 58 Bronze Boutique Edition 39mm M79012M-0001 - $4,000

2022 Tudor Black Bay 58 Bronze Boutique Edition 39mm M79012M-0001 - $4,000

Tudor - M79012M-0001 · $4,000
2022 Tudor Black Bay Fifty-Eight Bronze, featuring a 39mm full bronze case with gradient brown dial and in-house COSC MT5400 movement. This watch develops a beautiful patina over time.

  • Condition: Excellent
  • Case material: solid bronze
  • Bracelet type: T-Fit clasp with 8mm micro-adjustment
  • Water resistance: not specified
Posted at
May 21, 2026, 11:14 PM
Active
[WTS] Tudor Black Bay 36mm - Smiley Blue - $2550 - Shipped - Full Set - Ref: 79500

Tudor Black Bay 36mm - Smiley Blue - $2550 - Shipped - Full Set - Ref: 79500

Tudor - 79500-0004 · $2,550
A 2022 Tudor Black Bay 36mm in Smiley Blue is being sold. It features a sapphire crystal, stainless steel bezel, and an O.E.M original 'Oyster-style' steel bracelet.

  • Condition: Great with minor marks
  • Crystal: sapphire crystal
  • Bezel: smooth stainless steel
  • Case: 36mm diameter, good condition
Posted at
May 21, 2026, 9:59 PM
Active
[WTS] Hot Off The Press 🔥🔥🔥 Tudor Black Bay 58 - New Reference – 7939A1A0NU – Brand New / Fully Stickered – Full Set - $4,599

Hot Off The Press 🔥🔥🔥 Tudor Black Bay 58 - New Reference – 7939A1A0NU – Brand New / Fully Stickered – Full Set - $4,599

Tudor - 7939A1A0NU · $4,599
This is a brand new Tudor Black Bay 58 reference 7939A1A0NU, completely unworn and remains fully stickered from the factory.

  • Condition: Brand new / unworn, fully stickered
  • Case size: 39mm
  • Movement type: Tudor automatic movement
  • Water resistance: 200m
Posted at
May 21, 2026, 6:22 PM
Active
[WTS] Tudor Black Bay GMT S&G Rootbeer 41mm | Ref. M79833MN-0001 | 2024 | Box and Papers | $4,500

Tudor Black Bay GMT S&G Rootbeer 41mm | Ref. M79833MN-0001 | 2024 | Box and Papers | $4,500

Tudor - M79833MN-0001 · $4,500
A 2024 Tudor Black Bay GMT S&G in the iconic 'Rootbeer' colorway, featuring a 41mm steel case and yellow gold accents.

  • Condition: Excellent with minimal signs of wear
  • Case diameter: 41mm
  • Water resistance: 200m depth rating
  • Bracelet material: Steel and yellow gold
Posted at
May 21, 2026, 4:03 PM
Active
[WTS] Tudor Black Bay 54 2026 New Unworn Full Set $3900 - U.S. Only

Tudor Black Bay 54 2026 New Unworn Full Set $3900 - U.S. Only

Tudor - Black Bay 54 2026 · $3,900
Tudor Black Bay 54 2026 in full set condition, purchased for personal wear but now available as the owner has been gifted another watch.

  • Condition: New Unworn
  • Origin: Made in Switzerland
Posted at
May 21, 2026, 3:13 PM
Active