Strap for Portofino Automatic Yellow Gold / Champagne / Strap

The lug width of the IWC Portofino IW3513-02 is 18 millimetres. This measurement is essential for purchasing a compatible strap and also determines the final aesthetic balance of the watch on the wrist. The 18mm represents the ideal compromise for a 34mm case, ensuring harmonious proportions.

For an IW3513-02 in yellow gold, the most recommended materials are cognac or medium-brown alligator, which create natural colour continuity with the warmth of the gold. Alternatively, vegetable-tanned calf leather in hazelnut or dark brown tones offers sophisticated elegance. Black shell cordovan is the choice for those desiring drama whilst maintaining the readability of the sunburst dial.

Strap changing is accomplished by removing the lateral spring bars that secure the lug to the case. Using a spring bar removal tool or small flat-head screwdriver, gently push the bar from the opposite side until it detaches. Once the bar is free, the old strap separates naturally. Position the new strap by aligning the holes with the case, and reinsert the spring bar until fully seated. The operation takes approximately 2-3 minutes for those experienced.

Yes, all straps with an 18mm lug width are mechanically compatible. However, aesthetic compatibility depends on the choice of material and colour: to maintain the model's stylistic coherence, noble leather on a deployante is recommended, reflecting the construction excellence of the IW3513-02. Lower-quality straps may compromise the perception of the watch's value.

The lifespan of a leather strap depends on material quality, frequency of wear and maintenance care. A quality alligator or shell cordovan, worn daily under normal conditions, maintains functionality for 3-5 years before requiring replacement. The leather develops a natural patina and age cracks that enhance its character over time. Proper exposure management to sunlight and humidity, avoiding prolonged contact with salt water, significantly extends lifespan.