Strap for Portofino Automatic Moon Phase 37 Stainless Steel / Silver

The lug width of the Portofino IW4596-01 is 18 mm. This measurement is taken internally between the two lugs of the case using a digital calliper. It is a relatively uncommon width in contemporary production, so it is essential to verify this specification before ordering an aftermarket strap.

Alligator leather with vegetable tanning is the solution most aligned with the Portofino's aesthetic identity: its natural texture, with regular scutes and subtle relief, emphasises the sobriety of the white dial without competing for visual attention. In terms of colour, polished black is ideal for formal contexts, whilst cognac brown offers warm, timeless harmony.

To change the strap, a spring bar removal tool is required: position the tool under the spring bar, apply gentle inward pressure to release the spring mechanism, and extract the bar. The operation should be performed sequentially on both sides. If you do not possess the tool, a watch specialist can complete the change within minutes.

Yes, milanostraps.it offers handcrafted 18 mm straps fully compatible with the Portofino. They are available in multiple materials (alligator, shell cordovan, vegetable-tanned calf) and colours, customisable in length, initials and stitching type. The Casati Milano atelier also creates made-to-measure straps with personal consultation.

A high-quality artisanal leather strap, if subjected to regular maintenance (periodic cleaning, protection from excessive humidity), can last between 5 and 10 years with daily use. Longevity depends on the tanning method (vegetable tanning ensures greater durability), intensity of use and environmental conditions. Casati Milano straps come with an 18-month warranty and can be regenerated through maintenance interventions.