Strap for Constellation Master Chronometer 36 Stainless Steel / Black / Bracelet

The Omega Constellation 131.10.36.20.01.001 features a standardized lug width of 22 millimeters. This width is determined by the geometry of the case lugs and allows the use of all straps built to the 22mm standard without requiring any adjustments or modifications to the spring bars.

For the Constellation 131.10.36.20.01.001, an alligator strap with vegetable tanning enhances the classical elegance and formal vocation of the model. If versatility is sought, vegetable-tanned calf leather offers daily comfort while maintaining sophistication, while a woven NATO strap provides practicality in sportier environments without compromising the watch's stylistic identity.

Strap replacement is accomplished by removing the spring bars that connect the lugs to the case. Using a spring bar tool (a small specialized instrument), light pressure is applied to one of the spring bars, freeing it from its housing, and then the old strap is withdrawn. Next, the new strap is positioned, the spring bar is reinserted, and the locking is verified. This operation requires care to avoid scratching the case.

All straps built to the 22mm lug width standard are universally compatible with the Constellation 131.10.36.20.01.001, regardless of the manufacturing brand. Alligator, calf leather, shell cordovan, NATO canvas, FKM rubber, and innovative materials: the only constraint is the exact 22 millimeter width measured between the internal lug attachments on the case.

A quality leather strap (alligator or vegetable-tanned calf) lasts on average 5–8 years under daily wear conditions, depending on climate, humidity levels, and maintenance frequency. Proper care—cleaning with a damp cloth, natural drying, and periodic application of leather cream—significantly extends longevity. FKM rubber typically has a shorter lifespan (3–5 years) but superior resistance to chemicals and moisture.