Strap for Chronoris Williams 40th Anniversary Limited Edition / Bracelet

The lug width of the Oris Chronoris 01 673 7739 4084-Set LS is 20 mm. This measurement is critical for ensuring compatibility with aftermarket straps. To verify it accurately, extract the spring bar from the seats on the case lugs and measure the internal distance between the two metal shoulders.

There is no single 'best' strap: selection depends on usage patterns and aesthetic preference. An alligator strap with vegetable tanning develops a patina that ages coherently with the case's stainless steel. A cognac vitello or shell cordovan maintains sportiness without rigidity. FKM rubber excels in humid climates and water exposure. A stainless steel bracelet remains the natural choice for daily-wear chronographs.

The Chronoris lugs utilise a spring bar mechanism. Position the watch with the lug facing upward, locate the small groove on the inner side of the spring bar, press gently downward with a flat tool (do not apply excessive force) and slide the strap out of the lugs. Reverse the process with the new strap, ensuring the spring bar is fully seated.

Yes, the Chronoris 01 673 7739 4084-Set LS is compatible with any high-quality strap featuring a 20 mm lug width. Milano Straps offers a dedicated collection of artisanal straps in leather (alligator, vitello, shell cordovan), NATO fabric and rubber, all compatible and customisable online.

Leather strap longevity depends on material quality, tanning method and usage intensity. An artisanal strap in alligator or shell cordovan with vegetable tanning has a service life of 5–7 years under moderate use. Leather develops patina and character over time, not immediate degradation. Should visible wear occur, Milano Straps enables replacement with a new 20 mm strap without case modification.