Tudor · Black Bay

Strap for Tudor Black Bay 79230B

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
Reference79230B
FamilyBlack Bay
MovementTudor caliber MT5602 Hours, Minutes, Seconds | Chronometer

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 79230B

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Black Bay 79230B, seen from the bench

The Black Bay was introduced by Tudor in 2012 as a sporty diving watch. It houses the automatic MT5602 caliber with chronometer certification, indicating hours, minutes and seconds. 41mm stainless steel case with 22mm lugs.

Frequently asked questions

What is the lug width of the Tudor Black Bay 79230B?

The Tudor Black Bay 79230B features a lug width of 22mm. This width is standard for the model and ensures compatibility with all straps specifically sized for this dimension. Verifying the correct lug width before purchasing an aftermarket strap is essential, as an incorrect width will prevent proper installation on the case lugs.

Which strap is most suitable for the Tudor Black Bay 79230B?

For the 79230B, we recommend a strap in alligator or calf leather with a smooth finish, which enhances the formal-sports character of the watch. Vegetable-tanned alligator creates an elegant contrast with the Bleu Marine dial, whilst calf leather offers greater daily wearability. For a more military aesthetic, a navy blue or black NATO strap remains the most authentic choice, consistent with the model's historical genesis.

How do you change the strap on a Tudor Black Bay 79230B?

The 79230B strap is changed using a spring bar tool. Position the watch on a stable surface, insert the tool's tip into the slot beneath the lug, gently lift to release the spring pin, then extract the strap. To install the new strap, insert the spring pin into one slot of the new strap, position it beneath the lug and press the opposite end until the pin clicks into the second slot. Repeat on the other lug.

Is a 22mm aftermarket strap compatible with the Black Bay 79230B?

Yes, any strap with a 22mm lug width is compatible with the 79230B. However, verify that the strap is correctly dimensioned in length: the upper portion must extend at least 30-35mm from the spring pin to ensure comfortable fastening on the wrist. We recommend artisanal straps that allow customisation of length and deployante (folding clasp), a solution that offers superior fit compared to standard straps.

What is the lifespan of a leather strap on a Tudor Black Bay 79230B?

A quality leather strap with vegetable tanning has an average lifespan of 3-5 years, depending on intensity of use and climatic conditions. More robust leathers such as alligator or shell cordovan can last 7-10 years. Longevity increases significantly if the strap is removed when not worn and stored in a dry environment. Natural wear—patina, micro-scratching, slight fading—is a desirable characteristic of genuine leather and testifies to the authenticity of artisanal construction.

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