Strap for Constellation Manhattan 29 Co-Axial Master Chronometer Stainless Steel / Sedna Gold / Brown

The lug width is 18mm. This measurement is precise and determined by the case geometry: it is measured by positioning a calliper on the inner part of the case, between the vertical pins, without including any external coating. It should not be confused with the case diameter (29mm).

For this two-tone Sedna Gold and steel reference, we recommend alligator with vegetable tanning: the natural texture amplifies the luxury character of the case and ages harmoniously with the Sedna Gold. A tobacco or dark brown alligator creates aesthetic harmony with grey or blue dials, while a burgundy or cognac offers sophisticated contrast. Shell cordovan is an excellent alternative if the watch is a daily companion.

The strap is removed by releasing the pins from inside the case. Omega provides dedicated small tools; alternatively, a small flat-head screwdriver or a pin extractor tool allows you to gently push the pins out of the lugs. Insert the new 18mm strap into the lugs and push the pins back in until fully seated. If you prefer to avoid risk, an experienced jeweller will complete the operation in a few minutes.

Yes, provided the lug width is exactly 18mm. Milano Straps and custom Casati Milano straps are specifically designed for this measurement and guarantee complete compatibility. Always verify that the strap is certified for 18mm lug width, as case diameter and lug width are independent.

A high-quality alligator or shell cordovan strap (vegetable tanning, handcrafted stitching) lasts 5-8 years with regular use and proper maintenance. Durability depends on intensity of use, exposure to moisture and periodic leather hydration. A strap with a <a href="/pages/termine-glossario/deployante">deployant clasp</a> extends its lifespan as it reduces torsional stress. Casati Milano straps include an 18-month warranty and personalized care advice.