Tudor · Black Bay One
Strap for Black Bay 36 S&G / Anthracite - Diamond / Bracelet
Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Black Bay One 79643-0003 (aka: M79643-0003)
Selected for the 19 mm lug width
Vintage Brown Calfskin Strap — Natural Patina€98
Hammered Pink Strap with Ecru Stitching€98
Hammered Yellow Strap with Ecru Stitching€98
Grey Hammered Leather Strap with Ecru Stitching€98
Swift Red Leather Strap€120
Hammered calfskin strap in cuoio€98
The Black Bay One 79643-0003 (aka: M79643-0003), seen from the bench
Frequently asked questions
What is the lug width of the Tudor Black Bay One 79643-0003?
The Tudor Black Bay One 79643-0003 features a 19-millimetre lug width. This specification is standard across the entire Black Bay 36mm collection and allows compatibility with the extensive range of aftermarket straps available. Measurement is performed by positioning a ruler against the metal bar protruding from the case after strap removal.
Which strap do you recommend for the Tudor Black Bay One 79643-0003?
We recommend tobacco-brown alligator or shell cordovan to enhance the warmth of the two-tone gold case; black calf leather for formal contrast; NATO textile in earth tones for vintage maritime aesthetics. Selection depends on usage context and personal preference. The Casati Milano atelier offers complimentary consultation and creates bespoke straps with leather selection and 18-month warranty.
How do I change the strap on a Tudor Black Bay One 79643-0003?
Use a professional spring bar tool (stainless steel extractor) to release the internal spring fixing the lug to the case. Insert the tool tip into the lateral aperture of the lug, toward the case interior, apply gentle pressure and pull the strap outward. Repeat on the opposite case end. Ensure springs are fully reseated before wearing the watch.
Are 19mm aftermarket straps compatible with the 79643-0003?
Yes, any strap with 19mm lug width is compatible with the Tudor Black Bay One 79643-0003, provided the lug is stainless steel and structurally sound. Verify that material thickness does not exceed 4mm to prevent binding in the case lugs. milanostraps.it offers tested and guaranteed 18-month straps.
What is the lifespan of a leather strap on a Tudor Black Bay One 79643-0003?
A quality leather strap (alligator, calf, shell cordovan) worn daily resists 18–24 months before servicing or replacement. Ageing accelerates with humid climates, salt water or frequent perspiration exposure. Shell cordovan is the most durable material, reaching 36+ months continuous wear. milanostraps.it straps guarantee artisanal quality and certified durability with 18-month warranty.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
