Strap for Heritage Black Bay 36 S&G / Champagne / Bracelet

The Tudor Black Bay One M79503-0002 is equipped with a 19-millimetre lug width. This dimension is measured internally between the case lugs and represents the exact space where the strap must be inserted. Respecting this measurement is essential to ensure perfect fit and mounting security.

For the Black Bay One 79503-0002, the ideal material is black alligator, which emphasises the dark dial and creates aesthetic synergy with the yellow gold case. Alternatively, bordeaux shell cordovan offers a patina that evolves over time, whilst vegetable-tanned calf leather guarantees breathability and sustainability whilst maintaining formal elegance.

Strap replacement requires a spring bar tool (extractor). Position the tool in the recess beneath the lug pin, gently push outward to compress the internal spring, then extract the pin. Repeat on both sides. Insert the new strap by aligning the lug width to the pins and allow the spring to snap back. Do not force: the spring must function smoothly.

Yes, any strap with a 19-millimetre lug width is dimensionally compatible. However, we recommend verifying the leather thickness: for visual harmony with a 36mm case, the ideal thickness is 1.0–1.4mm. Straps that are too thick may alter proportions.

A quality leather strap (alligator, shell cordovan or naturally tanned calf) lasts on average 3–5 years with moderate daily use, up to 7–8 years if properly maintained: avoid persistent moisture, apply protective wax every 6–8 months, allow to air-dry in shade if wet. Patina and natural ageing of leather are desired characteristics, not defects.