Tudor · Black Bay One

Strap for Tudor Black Bay One 79500

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter36 mm
Reference79500
FamilyBlack Bay One
MovementETA caliber 2824-2 hours, minutes, seconds | date

Spring bar

Spring bars for Tudor

The right category for this model · choose the 19 mm size

Straps for the Black Bay One 79500

Selected for the 19 mm lug width

All 19 mm straps →

The Black Bay One 79500, seen from the bench

The Tudor Black Bay One (ref. 79500) features a 36mm stainless steel case with 19mm lugs. The movement is the automatic ETA caliber 2824-2 with hour, minute, second and date indication. The compact case size positions it in the realm of sporty watches.

Frequently asked questions

What is the lug width of the Tudor Black Bay One 79500?

The lug width of the Tudor Black Bay One 79500 is 19 millimetres. This measurement is critical for selecting compatible straps and ensuring precise fitment to the case spring bars. Verification with a digital calliper or by a qualified watchmaker is essential to avoid mechanical instability.

Which strap is best suited for the Tudor Black Bay One 79500?

For the Black Bay One 79500, we recommend black alligator for formal elegance, chocolate brown calf with natural patina for versatility, or dark blue NATO to emphasise military heritage. Optimal thickness ranges between 3 and 4.5mm given the slender 36mm case. Avoid decorative excess that competes with the slate-grey dial's purity.

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

Strap replacement requires extraction of the spring bars using a dedicated spring bar tool. Given the precise proportions of the 36mm case and 19mm lug width, we recommend having a trusted watchmaker perform this operation to avoid surface scratches. Delicacy is necessary, particularly near the prominent crown.

Which aftermarket straps are compatible with the Tudor Black Bay One 79500?

All straps with 19mm lug width are compatible, whether leather (alligator, calf, cordovan, vegetable-tanned) or fabric (NATO) or rubber (FKM). Avoid thicknesses exceeding 5mm to preserve original proportions. Verify spring bar compatibility: the 79500 uses standard internal-spring attachments.

How long does a leather strap last on a Tudor Black Bay One 79500?

Durability depends on leather grade and usage frequency. Premium alligator withstands 3-5 years with standard maintenance. Calf leather has comparable longevity, whilst shell cordovan may last 7-8 years. The 19mm lug width accommodates robust straps; critical factors include stitching quality, thread grade and wear intensity. An 18-month warranty is standard from artisanal producers.

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