Strap for Portofino Automatic Yellow Gold / Champagne / Bracelet

The lug width of the IWC Portofino IW9261-04 is 18mm. This measurement is taken between the strap attachment points on the case lugs. Any compatible watch strap must measure exactly 18mm in width to ensure a proper fit without side tension or gaps.

For a yellow gold Portofino of 34mm diameter, we recommend alligator leather in cognac or tobacco tones: the regular texture of the alligator grain complements the geometric lines of the case and enhances the natural gold patina over time. Valid alternatives include vegetable-tanned calf leather with a raw grain finish (more versatile) or burgundy shell cordovan (for those seeking refined contrast).

The Portofino IW9261-04 uses either a classic strap passant or, on some versions, screw-secured lugs. To change the strap: 1) position the watch on a soft work surface; 2) loosen the lug screws with a small precision screwdriver if present; 3) slide the old strap outward; 4) insert the new strap in the same direction; 5) secure the screws again with moderate tension (do not over-tighten). If unsure, a professional watchmaker can perform this operation in minutes.

Yes, any quality strap with an exact 18mm lug width is compatible with the Portofino IW9261-04. Premium aftermarket straps in alligator, shell cordovan, or vegetable-tanned calf offer superior durability and aesthetics compared to OEM options, and allow customisation of colour, finishing, and hardware (clasp type, thread colour).

A premium leather strap—alligator, shell cordovan, or vegetable-tanned calf—typically lasts 3-5 years with daily wear, depending on leather type, frequency of use, and care. Alligator is the most durable; shell cordovan develops a rich patina but requires protection from excess moisture. A well-maintained strap can reach 7-8 years of service. Periodic replacement is a natural part of luxury watch ownership.