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Tudor
Black Bay Chrono 25

m79377kn

£7,295.00
£7,295.00 £7,295.00
On Sale Out of stock
In Stock
Box

Box

Papers

New/unworn

Instructions

Instructions

Manufacturers Warranty

Manufacturers Warranty

Papers

Papers

Watch Case Material

Carbon

Watch Movement

Automatic

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28 Day
Free Returns

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Free Insured Shipping
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A bold fusion of cutting-edge motorsport technology and Tudor’s legendary chronograph heritage, the Black Bay Chrono “Carbon 25” 79377KN is a limited production piece that celebrates both the thrill of the racetrack and the relentless pursuit of precision. Released in partnership with the Visa Cash App Racing Bulls Formula One Team for the 2025 season, this watch is limited to just 2,025 individually numbered pieces—each a tribute to a landmark year in Tudor’s ever-evolving motorsport story. The 42mm case is a technical marvel, crafted entirely from lightweight carbon fibre—including the end-links—for a stealthy, high-performance feel on the wrist. The fixed bezel, also carbon fibre, is engraved with a tachymetric scale, ready to time laps or measure speed with a single glance. Titanium pushers and a PVD-finished screw-down crown, adorned with the Tudor rose in relief, add both durability and a tactile sense of quality. The caseback, finished in PVD titanium, is individually numbered, marking each watch’s unique place in this exclusive series. The white dial is a striking canvas for the motorsport-inspired design, featuring luminous black carbon fibre sub-counters and bold, legible indices. The chronograph layout is classic yet contemporary, with a date window at 6 o’clock and domed sapphire crystal providing both clarity and a sense of depth. Every detail, from the domed dial to the hybrid leather-rubber strap with “tyre pattern” embossing, is a nod to the world of high-speed racing and Tudor’s long-standing connection to the sport. Inside beats the Manufacture Calibre MT5813, a COSC-certified, self-winding mechanical chronograph movement with a column wheel and vertical clutch—offering a robust 70-hour power reserve and exceptional precision. The movement is the result of Tudor’s technical partnership with Breitling, ensuring reliability and performance worthy of the most demanding environments. Water resistant to 200 metres (660 feet), the Black Bay Chrono “Carbon 25” is as ready for the ocean as it is for the pit lane. The hybrid strap, with its distinctive blue stitching, is complemented by a folding clasp in black PVD-treated steel, while an additional fabric strap is included for those who prefer a more casual look. This watch is sold as a full set with a special edition box, original warranty card, instruction manual, hangtag and bezel cover. Originally sold in October 2025. This watch remains in unworn condition without factory stickers. A true collector’s piece, the Tudor Black Bay Chrono “Carbon 25” is a celebration of speed, innovation, and the enduring spirit of competition. Whether you’re trackside or simply appreciate the fusion of advanced materials and classic chronograph design, this watch is engineered to stand out—on the wrist and in the history books.

Watch Condition

The table below summarises the condition of the watch, highlighting any signs of wear for easy assessment.

bezel none !

Like new; no scratches or other signs of wear; unpolished.
bracelet and clasp none !

Like new; no scratches or other signs of wear; unpolished.
case back none !

Like new; no scratches or other signs of wear; unpolished.
case none !

Like new; no scratches or other signs of wear; unpolished.
crystal none !

Like new; no scratches or other signs of wear.
dial none !

Like new; no scratches or other signs of wear.

product Specification

Brand Tudor
Model number M79377kn
Condition bezel None
Condition bracelet and clasp None
Condition case back None
Condition case None
Condition crystal None
Condition dial None
Condition 0 (new/unworn)
Box Yes
Papers Yes
Year 2025
Instructions Yes
Movement Automatic
Display type Analogue
Case material Carbon
Case color Black
Bezel material Carbon
Case size 42mm
Dial colour White
Dial numerals Printed index
Strap material Rubber/plastic
Strap color Black
Clasp type Pin buckle/tang
Clasp material Carbon
Glass type Sapphire glass
Water resistancy 200m (dive standard)
Complication(s) Chronograph
Complication(s) Date
Other features Small seconds
SKU S4-018-023-50180350

Delivery & Returns

We’ll dispatch your order on the same day if placed by 1 pm Monday to Friday, orders placed after 1 pm will be processed on the following working day. Orders received after 1 pm on a Friday, will not be processed until the following Monday. Find out more

We are happy to offer FREE returns to our UK customers for an exchange or refund. Find out more

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Buying pre-owned watches and jewellery is a more sustainable choice as it gives existing pieces a longer life. Instead of mining or using new materials, you’re extending the story of beautifully crafted items that already exist, reducing waste, preserving resources, and celebrating timeless craftsmanship in the most responsible way.

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The Charles Fish guarantee

With almost 230 years of experience, you can trust us to offer exceptional expertise and honest prices. Our loyal team, many of whom have been with us for a decade or more, bring true passion and knowledge to everything we do. Every piece is carefully inspected by our experts to ensure quality and authenticity, so you can enjoy beautifully made jewellery and watches designed to last a lifetime and beyond.