Strap for Portugieser Perpetual Calendar 44 Armor Gold / Silver

The lug width of the IWC Portugieser IW5037-01 is 22mm. This specific dimension enables you to select from a wide range of compatible aftermarket straps. To verify the measurement accurately, use a digital calliper positioned perpendicularly between the two lugs of the case.

For the Portugieser IW5037-01, we recommend alligator leather in neutral tones (cognac brown, black, deep blue) or vegetable-tanned calf. Both materials enhance the elegance of the dial without visually competing with the Armor Gold case. Structured rubber represents a modern alternative for those who prefer durability and ease of maintenance.

Strap replacement requires either a spring bar tool or a dedicated tool to extract the pins from the lugs. Position the watch on a soft surface to avoid scratching the Armor Gold case. If you are unsure of the procedure, contact an authorised IWC service centre or our Casati Milano atelier, where our craftsmen perform the operation with precision.

Yes, any strap designed for a 22mm lug width is compatible with your IW5037-01. However, we recommend verifying the total length of the strap to ensure it fits your wrist properly. Our straps are customisable in size during the ordering process, guaranteeing a perfect fit.

A quality leather strap, such as alligator or vegetable-tanned calf, has a lifespan of 3-5 years with daily wear, increasing considerably if worn alternately. The material tends to develop a natural patina that enriches its appearance over time. The 18-month warranty offered by Casati Milano covers manufacturing defects and stitching.