Strap for Black Bay 39 S&G / Champagne - Diamond / Bracelet

The Tudor Black Bay One 79663-0008 features a 20 mm lug width on both ends of the case. This measurement is the distance between the two lugs (the protruding pins) where the strap attaches to the case. A standardised 20 mm lug width facilitates selection of compatible aftermarket straps without requiring case modifications or adjustments.

For the Tudor Black Bay One 79663-0008, we recommend natural-tinted alligator or vegetable-tanned veal leather, both of which accentuate the elegance of the steel and yellow gold two-tone case. Alligator offers refined texture and softness, ideal for formal contexts. Vegetable-tanned veal develops an aged patina over time, preferred by collectors who appreciate the tactile character of leather. For aquatic use, woven NATO or FKM rubber ensures durability and natural drying.

The strap is changed by removing the two spring bars that connect the strap to the case lugs. Use a dedicated tool or the blunt tip of a knife to gently lever the spring bar until the internal spring compresses. Once the bar is released, the original strap detaches easily. Insert the new strap by aligning the holes with the spring bars, then secure the mechanism until it clicks firmly into place. Verify that the strap sits perfectly horizontal and is not twisted.

Yes, any aftermarket strap with a 20 mm lug width is compatible with the Tudor Black Bay One 79663-0008. Artisanal aftermarket straps offer advantages over the original Tudor strap: premium materials (alligator, shell cordovan, exceptional veal), colour and texture customisation, and extended warranty. Always verify that the width is exactly 20 mm by measuring with callipers between the lugs before purchase.

A quality leather strap (alligator, vegetable-tanned veal, shell cordovan) typically lasts 3–5 years with regular maintenance and no continuous exposure to moisture or extreme heat. Vegetable-tanned veal maintains superior rigidity after 2–3 years, developing a natural protective patina. Alligator, more delicate, requires conditioning every 6 months with specific oils. Vulcanised rubber (FKM) resists 2–3 years under intense sun exposure. An alternative approach is to rotate multiple straps in the same 20 mm lug width, reducing wear on a single strap.