Tudor · Black Bay Chronograph

Strap for Heritage Black Bay Chronograph Dark / Black / Bracelet

Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width22 mm
Case diameter41 mm
Reference79360DK-0001 (aka: M79360DK-0001)
FamilyBlack Bay Chronograph
MovementTudor caliber MT5813 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Chronometer
CaseStainless Steel

Recommended spring bar

Modern Tudor 22mm spring bars — factory specification

Technical match for lug width and diameter · lug 22 mm · Ø 1.8 mm

All Tudor spring barsOpen →

Straps for the Black Bay Chronograph 79360DK-0001 (aka: M79360DK-0001)

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Black Bay Chronograph 79360DK-0001 (aka: M79360DK-0001), seen from the bench

The Black Bay Chronograph features the automatic MT5813 caliber with a column-wheel chronograph function and chronometer certification. The movement offers hours, minutes, small seconds and date indications. The watch features 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Tudor Black Bay Chronograph 79360DK-0001?

The Tudor Black Bay Chronograph 79360DK-0001 features a 22-millimetre lug width. This measurement is critical for strap compatibility: you must verify it by measuring the internal distance between the spring bar attachments. A 20 or 24-millimetre strap will not fit correctly, compromising both aesthetics and security of the fitting.

Which strap pairs best with the Tudor Black Bay Chronograph?

The most coherent options include: alligator belly (for understated sophistication), vegetable-tanned leather in tobacco brown (for natural patina development), shell cordovan in black (for superior durability), and heavy cotton NATO (for sports-purist aesthetics). Your choice should align with your intended use case: formal, sportive, or hybrid.

How do I change the strap on my Tudor Black Bay Chronograph?

Remove the watch from your wrist. Using a small flathead spring bar tool, apply downward pressure on one of the spring bars beneath the lug to release the attachment. Repeat on the opposite side. Insert the new strap by aligning the holes with the spring bars, then apply firm pressure until you hear a click. Verify the strap is secure before wearing.

Can I mount an aftermarket strap on my Tudor Black Bay Chronograph 79360DK-0001?

Yes, provided it complies with the 22-millimetre lug width specification. Certified artisanal straps—leather, rubber, textile—are fully compatible. Ensure your supplier explicitly states the 22mm dimension and that the material is rigid enough to maintain stable seating in Tudor's spring bar fittings, which carry specific tolerance requirements.

What is the expected lifespan of a leather strap on the Tudor Black Bay Chronograph?

A quality vegetable-tanned leather strap, with moderate daily use, typically lasts 3-5 years. Alligator and shell cordovan reach 5-7 years easily. Longevity depends on: frequency of wear, environmental humidity, maintenance treatments (conditioning creams every 12-18 months), and temperature fluctuations. Rotating between multiple straps extends the overall lifespan of your collection.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only