Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Sedna Gold / MOP

The Omega Constellation reference 131.53.29.20.55.002 has a lug width of 18 millimetres. This measurement is the space between the inner edges of the two spring bars and determines compatibility with aftermarket straps. To verify it, position a digital calliper between the spring bars at rest, without forcing the original bracelet.

Vegetable-tanned alligator with medium grain is the most balanced choice: it elegantly contrasts the Sedna Gold without competing visually. Bordeaux shell cordovan offers personality with a patina that evolves over time. For formal occasions, a black alligator with black stitching amplifies authority. In summer, a navy NATO guarantees versatility.

Gently remove the original bracelet by pressing the small spring bar buttons (located laterally) inward, sliding the lugs free. Do not force. Insert the new strap by aligning the holes with the spring bars and press until they click into place. The resistance should be smooth and constant, without play.

Yes. An 18mm aftermarket strap is fully compatible with the Constellation 131.53.29.20.55.002. Online you can find straps ready to ship in various materials (alligator, calf, cordovan, rubber). For a premium result, an atelier can create a bespoke strap with personally selected leather and an 18-month warranty.

A quality leather strap (alligator, calf, cordovan) typically lasts 3–5 years with daily wear, depending on the tanning method and exposure to moisture and sweat. Vegetable tanning ages more elegantly. Protecting the strap from direct water, heat and UV rays prolongs its life. A broken lug is replaceable; the leather is instead a consumable element.