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

The lug width of the Constellation 131.55.29.20.52.001 is 18mm. This measurement is determined by the spring bar integrated into the 29mm case and ensures compatibility with aftermarket straps of the same width. You can verify it by examining the spring slot after removing the original strap.

For the Constellation 131.55.29.20.52.001 in Sedna Gold, we recommend black or brown alligator for uncompromising elegance, shell cordovan for aging patina, or vegetable-tanned calf leather for versatility. The choice depends on the intended use and personal preference: black alligator enhances chromatic contrast; Cordovan creates material synergy; silk NATO is ideal for summer.

The strap is removed using a specific tool (pin remover) to disengage the spring bar from the case lugs. Insert the pin remover into the lateral slot of the spring, exerting controlled pressure to release the strap end from the housing hole. Proceed with care to avoid scratches on the Sedna Gold case. For installation of the new strap, reverse the procedure.

Yes, you can find online 18mm compatible straps customizable in leather, size, initials and stitching thread. The Casati Milano atelier also offers bespoke service by appointment with direct leather selection, WhatsApp updates and 18-month warranty, ideal for those desiring a completely customized experience.

Durability depends on the material and wear. A high-quality artisanal alligator or shell cordovan strap lasts 5-8 years with ordinary maintenance (protection from excessive moisture, drying after water contact). Vegetable-tanned calf leather lasts 4-6 years. FKM rubber guarantees 7-10 years. The Casati Milano warranty is 18 months, covering you against construction defects; natural aging is part of the character of the artisanal strap.