Tudor · Black Bay

Strap for Heritage Black Bay Blue Manufacture / Strap

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-0002
FamilyBlack Bay
MovementTudor caliber MT5602 hours, minutes, seconds | chronometer
Year2016
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 79230b-0002

Selected for the 22 mm lug width · workshop selection

All 22 mm straps →

The Black Bay 79230b-0002, seen from the bench

The Tudor Black Bay 79230b-0002 is a modern reinterpretation of 1950s diving watch heritage. It features a 41 mm stainless steel case with a black matte dial and Mercedes hands. The Tudor Caliber MT5602 automatic movement is chronometer certified with ±2 seconds per day precision. Water resistant to 200 meters with sapphire crystal and display caseback. The 22 mm lug width ensures balanced proportions and accommodates generous strap finishes.

Frequently asked questions

What is the lug width of the Tudor Black Bay 79230b-0002?

The lug width of the Tudor Black Bay 79230b-0002 is 22 millimetres. This measurement is the distance between the case lugs and is essential for selecting a compatible strap. Always measure the width by taking the internal base distance between the lugs, passing over the maximum diameter, to avoid any misalignment issues.

What is the best strap for the Tudor Black Bay 79230b-0002?

The best strap depends on your intended use and aesthetic preferences. For a classical approach, we recommend vegetable-tanned alligator in black or cordovan; for everyday versatility, calf leather with vegetable tanning in a tobacco brown; for sporty coherence, a NATO Premium in navy blue. All are available in the 22mm lug width compatible with your timepiece.

How do I change the strap on the Tudor Black Bay 79230b-0002?

To change the strap, use a dedicated spring bar tool or contact a professional. Gently remove the spring bars from the case lugs by applying inward pressure. Insert the new strap into the lug seats, ensuring the spring bars click securely into both attachments. Always verify stability before wearing the watch.

Can I use an aftermarket strap on the Tudor Black Bay 79230b-0002?

Yes, any artisanal or aftermarket strap in 22mm lug width is compatible with the Black Bay 79230b-0002. What matters is verifying that the width is exactly 22 millimetres and that the case lugs are in good condition. High-quality aftermarket straps significantly expand aesthetic options beyond official offerings.

How long does a leather strap last on the Tudor Black Bay 79230b-0002?

A high-quality leather strap made with vegetable tanning has an average lifespan of 3 to 5 years under normal use conditions. Longevity depends on usage frequency, exposure to sunlight and humidity, and regular care. Vegetable-tanned leathers develop an increasingly rich patina over time, enhancing their aesthetic appeal. Changing straps periodically keeps your watch fresh and protected.

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