Tudor · Black Bay One

Strap for Heritage Black Bay 32 Stainless Steel / Black / Strap

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter32 mm
Reference79580-0005 (aka: M79580-0005)
FamilyBlack Bay One
MovementTudor caliber T600 hours, minutes, seconds
Year2018
CaseStainless Steel

Spring bar

Spring bars for Tudor

The right category for this model · choose the 20 mm size

Straps for the Black Bay One 79580-0005 (aka: M79580-0005)

Selected for the 20 mm lug width · workshop selection

All 20 mm straps →

The Black Bay One 79580-0005 (aka: M79580-0005), seen from the bench

The Tudor Black Bay One 79580-0005 is a 32mm stainless steel dive watch presented in 2015, featuring the Tudor T600 movement and a black dial with unidirectional bezel. This compact tool watch combines 1960s military dive aesthetics with modern technology, offering 200 meters of water resistance. The 20mm lug width accommodates a wide range of strap options while maintaining classic proportions.

Frequently asked questions

What is the lug width of the Tudor Black Bay One 79580-0005?

The Tudor Black Bay One 79580-0005 features a 20mm lug width (ansa). This measurement is standardised and allows you to fit compatible straps of this exact width. To verify the lug width, check the outer width of the spring bar attachment on the case or consult the official Tudor documentation.

Which strap pairs best with the 32mm Tudor Black Bay One?

The ideal strap depends on your personal style and intended use. For formal settings, we recommend vegetable-tanned alligator in black or dark brown, which develops character over time. For daily wear, calfskin offers comfort and chromatic versatility. For sport-oriented occasions, natural rubber or a military NATO strap enhance the diver heritage of the model. All these materials are available in 20mm configuration.

How do I change the strap on the Tudor Black Bay One 79580-0005?

The Tudor Black Bay One uses standard spring bar attachments. To replace the strap, use a dedicated spring bar tool to gently compress the spring and slide the old strap out of the lugs. Insert the new strap, ensuring the spring clicks into position. This operation requires care to avoid scratching the case. Alternatively, Casati Milano offers professional strap replacement with artisanal expertise.

Can I fit an aftermarket strap on this Tudor model?

Yes, absolutely. The Tudor Black Bay One 79580-0005 is compatible with any high-quality 20mm strap. MilanoStraps offers a wide selection of customisable leather straps (alligator, calfskin, shell cordovan), rubber and technical materials, all ready to wear with fast delivery. The key is ensuring the lug width is exactly 20mm.

How long does a leather strap last on a Tudor watch like this one?

Durability depends on the material, tanning method and usage. A high-quality vegetable-tanned leather strap, such as those offered by MilanoStraps, typically lasts 3–5 years with daily wear. Leather develops patina and character over time, ageing beautifully. If worn occasionally or cared for with specific products (nourishing creams, water-repellent treatments), longevity extends further. Casati Milano provides an 18-month guarantee on all bespoke leather straps, with maintenance options available.

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