Strap for Portuguese Chrono-Automatic White Gold / Ardoise / Diamond

The lug width of the Portugieser IW3714-40 is precisely 20 millimetres. This measurement refers to the distance between the case lugs where the strap attaches via metal pins. It is essential to verify that any aftermarket strap is specifically compatible with 20mm to ensure accurate and stable fit on the wrist.

For the Portugieser IW3714-40 in white gold, alligator leather in vegetable tanning is the most congruent choice from an aesthetic standpoint. It represents the ideal balance between formal elegance and natural ageing. Alternatively, shell cordovan offers extraordinary patina development over time, whilst smooth calf provides daily versatility with good stylistic compromise.

To change the strap, remove the metal pins that secure it to the case. Use a spring bar tool—a specialized instrument with a curved end—to push internally one of the pins and extract it from its seat. Once the first pin is removed, the strap detaches easily. Align the new strap holes with the case pins and reinsert them until they click into place. Professional assistance is recommended to avoid damage to the case back.

Yes, any aftermarket strap with a 20mm lug width is compatible with the Portugieser IW3714-40, provided the case is in good condition and the pins are not worn. Compatibility is assured by the standardisation of lug width. However, it is advisable to choose certified quality straps to ensure durability consistent with the watch's value.

The lifespan of a leather strap depends on the material and frequency of use. A quality alligator or cordovan strap, with proper care and rotation with other straps, guarantees 4–6 years of continuous use. Vegetable-tanned calf has similar durability. Longevity increases significantly if the strap is worn occasionally and stored in dry environments. Periodic maintenance—gentle cleaning and conditioning treatments—extends the strap's life considerably.