Tudor · Black Bay

Strap for Heritage Black Bay Steel Manufacture / 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
Reference79730-0001
FamilyBlack Bay
MovementTudor caliber MT5612 hours, minutes, seconds | date | chronometer
Year2017 - 2018
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 79730-0001

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Black Bay 79730-0001, seen from the bench

The Black Bay represents Tudor's line of dive watches, equipped with the automatic MT5612 chronometer-certified caliber. The movement offers indication of hours, minutes, seconds and date. The case features 22mm lugs for the strap.

Frequently asked questions

What is the lug width of the Tudor Black Bay 79730-0001?

The lug width of the Tudor Black Bay 79730-0001 is 22 millimetres. This lug width is standard for medium to large wrist watches and is verified by measuring the distance between the two contact points of the strap on the case. An incompatible strap will not fit correctly, so it is essential to verify this dimension before purchase.

Which strap is recommended for the Tudor Black Bay 79730-0001?

For the Black Bay 79730-0001, a strap in vegetable-tanned leather in Havana tone is recommended, as it creates a rich aesthetic dialogue with the rose gold applied indices. Alternatively, satin alligator offers maximum elegance, whilst shell cordovan guarantees durability and sophisticated patina. A NATO or vulcanised rubber strap also maintains the sporty tool-watch character of the model.

How do you change the strap on a Tudor watch?

To change the strap, obtain a spring bar tool and position it in the vertical opening beside the lug pin. Apply gentle pressure to compress the internal spring and remove the old strap. Insert the new strap by aligning the two terminal holes with the pins, reposition the pin by compressing the spring until you hear a click. Repeat on the other side of the case.

Are there aftermarket straps compatible with the Tudor Black Bay 79730-0001?

Yes, the Tudor Black Bay 79730-0001 is compatible with any high-quality strap with a 22mm lug width. Specialised platforms such as Milano Straps offer artisanal leather straps in vegetable-tanned leather, alligator and shell cordovan, customisable in size, colour, initials and stitching thread. Warranty and construction quality differentiate premium straps from generic alternatives.

How long does a natural leather strap last on a daily-wear watch?

A natural leather strap subjected to daily wear typically lasts 3–5 years before requiring replacement, depending on leather quality and maintenance. Vegetable-tanned leather ages visibly, developing a patina that tells the story of use. Frequent exposure to moisture and perspiration accelerates wear; to extend strap life, dry it after water exposure and periodically apply a conditioning balm specifically formulated for leather.

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