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

The lug width of the Tudor Black Bay One 79673-0002 is 20 millimetres. This measurement is critical for purchasing compatible aftermarket straps. To verify it, place a digital calliper between the two titanium lugs connecting the strap to the case: the result must be exactly 20.0 mm. Any strap designed for this width will fit the case perfectly without lateral play.

The best strap depends on usage and personal preference. For maximum elegance, we recommend dark cognac or black alligator, which complements the stainless steel and yellow gold bimetallic case. For sports practicality, a vulcanised rubber or NATO fabric strap maintains the historical diving heritage. For those seeking a long-term relationship with the watch, vegetable-tanned calf develops a golden patina that harmonises with the case's gold components.

The Tudor Black Bay One uses straight titanium lugs. To replace the strap, use a dedicated spring bar tool to access the lugs from beneath the strap. Position the tool in the small hole at the base of the lug, lift gently until the lug releases from the case, remove the original strap, reinsert the lug into the new strap, and lock it into the case until you feel a distinct click.

The original Tudor strap is constructed to proprietary specifications for leather, buckle and stitching, guaranteeing perfect construction compatibility and manufacturer warranty. High-quality aftermarket straps (such as artisanal ones) use selected leathers, manual finishes and workmanship that often exceed average market quality. The important thing is to choose a manufacturer that understands the 20 mm lug width and the aesthetic proportions of the 39 mm case.

The lifespan of a leather strap depends on the quality of the leather, frequency of wear and environmental conditions. A high-quality alligator or calf strap, worn daily in normal conditions, lasts between 3 and 5 years before requiring aesthetic replacement (visible wear to the leather) or functional replacement (deterioration of the buckle or stitching points). Artisanal straps with vegetable tanning age by developing a natural patina that can extend perceived lifespan to 7-10 years. The standard warranty is 18 months.