Strap for Portofino Automatic Yellow Gold / Silver - Breguet / Strap

The lug width of the IWC Portofino IW3513-10 is 18mm. This dimension is determined by the proportions of the 34mm case and represents the design balance between case mass and lateral strap development. To measure correctly, measure the internal space between the two lugs where the strap inserts, not the external width of the case.

For a yellow gold Portofino, Mississippi alligator in Havana tonality creates natural tonal harmony with the case's golden charge. Vegetable-tanned calf leather is an excellent alternative as it develops a patina over time similar to gold's evolution. For formal contexts, a black calf strap with stainless steel deployante introduces elegant contrast whilst maintaining severity.

The strap is changed by removing the two lateral lugs of the case using a specific tool (spring bar remover) or by consulting a watchmaker. The lugs are housed in small lateral holes: insert the tool to compress the internal spring, releasing the lug. Subsequently insert the new strap by compressing the spring and positioning the lug in its seat.

Yes, any strap with an 18mm lug width is mechanically compatible with the IWC Portofino IW3513-10. Selection should consider the 34mm case diameter and desired aesthetic style. We recommend verifying compatibility with the strap retailer to ensure correct measurement and fit.

The lifespan of a leather strap depends on material and usage. Superior quality alligator and calf last 5-7 years with regular maintenance. Shell cordovan reaches 10+ years. Exposure to sunlight, perspiration and humid environments accelerates ageing. Periodic maintenance (cleaning, conditioning) significantly extends strap longevity.