Strap for Portugieser Chronograph "150 Years" Stainless Steel / Blue

The lug width of the IWC Portugieser IW3716-01 is 20 millimetres. This specification is exact to this model and must be measured accurately using a calliper positioned between the inner edges of the two lugs to ensure complete compatibility with aftermarket straps.

For the Portugieser IW3716-01, alligator straps (in dark brown or tobacco) and vegetable-tanned calf represent the most considered choices. Alligator maintains its shape over time and develops patina; vegetable-tanned calf creates an organic dialogue with the stainless steel case. Shell cordovan and leather NATO straps are valid alternatives depending on intended usage.

The strap is changed by removing the spring bars located at the internal ends of the lugs. Use a spring bar tool with two parallel pins, position it beneath the bar and compress gently inward: the bar will retract, allowing the used strap to be extracted. Align the new strap's holes and reinsert the bar until it clicks into place.

Yes, any strap with a 20mm lug width is compatible with the Portugieser IW3716-01. Artisanal straps produced by specialised ateliers often maintain superior construction quality compared to OEM straps, featuring finer leathers and hand-sewn stitching.

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) has a lifespan of 4-7 years with daily wear, extendable to 10-12 years with occasional use and periodic maintenance. Longevity depends on exposure to humidity, perspiration and direct sunlight.