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

2025 BRAND NEW Tudor Black Bay 68 7943A1A0NU $3,900

Tudor - M7943A1A0NU-0001 · $3,900

The watch is a Brand New Tudor Black Bay 68 with a gorgeous new sunburst blue dial and a 43mm case size. It features the METAS Master Chronometer certification Calibre MT5601-U with 70h of power reserve and a T-Fit clasp with up to 8mm of micro adjustment.

Condition: Brand New, Unworn, Unsized
Case Size: 43mm
Movement: Calibre MT5601-U
Certification: METAS Master Chronometer

Posted at

Apr 6, 2026, 5:52 PM

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Tudor Black Bay 54. 37mm. Lagoon Blue. 2026. Like New. m79000-0001.

Tudor - m79000-0001 · $4,650

This is a Tudor Black Bay 54 in Lagoon Blue, measuring 37mm and featuring a water resistance of 200m. It has a model year of 2026.

Condition: Like New
Case size: 37mm
Year: 2026

Posted at

Apr 6, 2026, 5:06 PM

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Tudor Black Bay 36 “Smiley” (Ref. 79500) OEM Steel Bracelet – Excellent Condition

Tudor - 79500 · $415

Up for sale is an OEM stainless steel bracelet for the Tudor Black Bay 36 "Smiley" (ETA movement version, ref. 79500). It's perfect if you're looking to swap out a strap or complete your watch with the original bracelet.

Condition: Excellent with light signs of wear from normal use
Compatibility: Tudor Black Bay 36 'Smiley' (ETA movement version)
Material: Stainless Steel
Clasp type: Tudor signed clasp

Posted at

Apr 6, 2026, 3:45 PM

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2026 Tudor Black Bay 54 Blue Lagoon – 37mm (Ref. 79000)

Tudor - 79000 · $4,975

Up for sale is a 2026 Tudor Black Bay 54 Blue Lagoon, reference 79000. The watch features a 37mm case.

Condition: Excellent pre-owned condition, minor signs of wear on bezel and bracelet clasp
Year: 2026
Case Size: 37mm

Posted at

Apr 6, 2026, 2:34 PM

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Tudor Black Bay GMT 41mm Bezel Insert Steel Reef “Coke”

Tudor - Black Bay GMT 41mm Bezel Insert Steel Reef 'Coke' · $95

A black dial watch from Tudor with a GMT functionality, featuring a 41mm case size.

Condition: Like New In Box (LNIB)
Case size: 41mm
Material: Steel

Posted at

Apr 6, 2026, 1:25 PM

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Tudor Black Bay Pro Opaline 12/25 + Delugs Strap

Tudor - Black Bay Pro Opaline 12/25 · $3,600

A Tudor Black Bay Pro Opaline with a warranty dated December 25. It has normal wear on the polished areas and small marks on the bezel.

Condition: Normal wear on the polished areas, small marks on the bezel, tiny hair inside the case
Strap: Grey Delugs strap (fits up to 6.75-7 inches)
Warranty Date: 12/25

Posted at

Apr 6, 2026, 12:13 PM

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2025 Tudor Black Bay 68 Blue Dial 7943A1A0NU Full Set $4,000 Shipped

Tudor - 7943A1A0NU · $4,000

A modern dive watch featuring a sun-brushed blue dial, powered by the Tudor Manufacture Calibre MT5601-U, with a unidirectional dive bezel and 200m water resistance.

Condition: Excellent (pre-owned, minimal wear)
Case size: 43mm
Case material: Stainless steel
Movement: Automatic (Tudor Manufacture Calibre MT5601-U)

Posted at

Apr 6, 2026, 7:12 AM

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Tudor Black Bay 58 Burgundy Dial Stainless Steel Full set Box & Papers

Tudor - M7939A1A0RU · $4,195

The Tudor Black Bay 58 features a burgundy dial and is housed in a 39mm stainless steel case, presented on an oyster bracelet.

Condition: Excellent, with minor mark on bezel
Bracelet type: 3 link 'oyster' stainless steel
Bracelet links included: yes
Box and papers included: full set

Posted at

Apr 5, 2026, 10:23 PM

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The Tudor everyone ignored… until they handled one. Black Bay Steel

Tudor - Black Bay Steel · $2,295

The Black Bay Steel is a practical daily watch that keeps the classic Tudor tool-watch feel while being easy to wear. It has a 41mm case with brushed steel bezel and date.

Condition: honest wear throughout from normal use
Case Size: 41mm
Bezel Material: brushed steel
Included Accessories: box, manual, eBay authentication card

Posted at

Apr 5, 2026, 6:27 PM

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