Strap for Heritage Black Bay 41 Black / Strap

The lug width of the Tudor Black Bay One 79540-0003 is 22 millimetres. This measurement refers to the internal distance between the two lugs where the strap attaches to the case. It is essential to verify this dimension before purchasing an aftermarket strap to ensure perfect compatibility without excessive tolerance.

For the Black Bay One 79540-0003, alligator leather of superior quality is recommended, along with calf leather of medium thickness (1.4–1.5 mm), or shell cordovan for those seeking maximum longevity and patina development. Alligator creates aesthetic synergy with the bronze bezel, whilst calf leather offers chromatic versatility. For sports use, a silk NATO strap or structured rubber maintains the diving authenticity of the timepiece.

To change the strap, remove the lugs from the case using a spring bar tool, inserting the tip into the lateral slot and gently pushing downward to compress the internal spring. Once the lugs are extracted, insert the new strap into the vertical slots of the lugs and reinsert the lugs into the case with a fluid motion. Verify that the lugs are fully seated in position and that the strap is not twisted.

Yes, it is entirely possible. Simply ensure that the strap has a 22-millimetre lug width and that the attachment points are compatible with the geometry of the Tudor lugs. Handcrafted straps in alligator, calf, or shell cordovan adapt perfectly and frequently offer superior quality compared to standard straps. We recommend using a deployante clasp to protect the case and ensure impeccable fit.

The lifespan of a leather strap depends on the material and usage patterns. Quality calf leather lasts approximately 4–6 years with daily wear; alligator can reach 7–10 years thanks to its denser structure; shell cordovan, owing to its exceptional durability, can last 10–15 years. Exposure to moisture, pool chlorine, and perspiration accelerate degradation. Regular maintenance with specific creams significantly extends longevity.