Strap for Portofino Automatic Stainless Steel / Black

The lug width of the Portofino IW3563-08 is 20.00 millimetres. This is the vertical distance between the two spring bars that connect the strap to the case. You can verify this by measuring the space between the holes at the strap ends with a digital calliper or by observing an already compatible strap.

For the Portofino, we recommend three options depending on use: vegetable-tanned alligator leather for absolute formality, natural calf for everyday elegance with temporal patina, or heavyweight cotton NATO for versatility. Shell cordovan is the premium solution for those seeking decade-long durability and a deepening bordeaux patina over time.

Strap replacement requires a special tool (spring bar tool). Position the watch with the lugs facing upward, insert the flat tip of the tool under one spring bar to release it from its seat, then extract it. Repeat for the second bar. Align the holes of the new strap with the pins and reinsert them with controlled pressure until you feel the locking click.

Yes, any strap with a 20mm lug width is fully compatible with the Portofino IW3563-08. Just ensure the strap has two holes exactly 20 millimetres apart. Artisanal personalised straps can even be stitched in slightly different sizes (19.5–20.5mm) for optimal fitting on your specific case.

A quality leather strap, such as alligator or vegetable-tanned calf, typically lasts 3–5 years with regular use and ordinary maintenance. Shell cordovan can reach 10+ years thanks to the natural strength of equine fibre. Longevity depends on frequency of use, perspiration, UV exposure, and periodic cleaning. A heavyweight cotton NATO strap lasts longer and can be easily replaced.