Strap for Portofino Chronograph Stainless Steel / Silver

The lug width of the IWC Portofino IW3783-02 is 20 mm. This measurement refers to the inner distance between the lateral lugs of the case, where the spring bars anchor. To verify this precisely, measure the inner space between the two lugs using a digital calliper, ensuring you measure the internal distance rather than the external case width.

For the Portofino IW3783-02, we recommend a vegetable-tanned alligator with structured grain as the primary choice, as it dialogues beautifully with the dial's severity and develops a fascinating patina over time. Alternatively, shell cordovan in burgundy tones or aniline-dyed cognac calf leather offer refined elegance. For more sporty contexts, a butyl rubber calotte or natural linen NATO provides practicality without completely sacrificing aesthetic statement.

Strap change is performed by extracting the lateral spring bars. Position the watch on a soft pad and use a spring bar tool to gently lift the spring bar from one side, applying downward pressure on the internal spring. Once lifted, the strap releases easily. Repeat on the opposite side. When installing the new strap, ensure the spring bars click securely into position, guaranteeing safe anchoring.

Yes, any strap with a 20 mm lug width is compatible with the IWC Portofino IW3783-02. MilanoStraps offers a selection of 20mm straps in various materials (alligator, shell cordovan, calf, rubber, fabric) ready for shipment and customisable in sizing, initials, and thread colour. For specific requirements, the Casati Milano atelier crafts bespoke straps.

Leather strap longevity varies based on material, frequency of wear, and maintenance conditions. A vegetable-tanned alligator or high-quality shell cordovan has a lifespan of 3-5 years with daily wear, thanks to the structural robustness of the fibre. Aniline-dyed calf tends to be more delicate, with a lifespan of 2-3 years. To extend life, keep the strap dry, protect it from direct heat sources, and occasionally apply a protective balm. MilanoStraps guarantees 18 months on straps realised in-house.