Strap for Portugieser Chronograph Stainless Steel / Black

The lug width of the Portugieser IW3716-09 is 20mm. This dimension is determined by the case geometry at 41mm and the integrated stainless steel lugs. Watch straps must respect this specification precisely to ensure correct seating in the lugs without lateral play or leather compression.

For this chronograph in stainless steel, we recommend three technically valid options: crocodilus alligator in vegetable tanning for aesthetic contrast between natural texture and metal geometry; French or Hermès calf leather in brushed finish for chromatic uniformity and progressive patina development; shell cordovan for its tactile density that emphasises case weight. Technical rubber remains the instrumental choice for nautical environments.

The Portugieser IW3716-09 uses a simple pin attachment system: insert a dedicated tool (strap pin remover) from the outside of the case, press toward the case centre and push the pin until it is fully released. Repeat for both lugs. The new strap must have precisely aligned passage holes: verify before insertion that pins slide without excessive resistance. If present, remove any deployant clasp from the old strap to transfer it if compatible (identical lug width).

Yes, the Portugieser IW3716-09 accepts aftermarket straps with 20mm lug width. The only technical limitation concerns strap height beneath the lug: the Portugieser case geometry (lug thickness and curvature) requires straps with minimum 12mm height in the transition zone between lug and main body. Excessively thin straps (under 10mm) can create visible play. We always recommend photographic verification before purchase, particularly for exotic leathers such as alligator or cordovan.

A quality leather strap (alligator, Hermès calf, shell cordovan) mounted on a Portugieser with average daily wear maintains acceptable functionality and aesthetics for 18–24 months. Factors accelerating deterioration: direct sunlight exposure (yellowing, stiffening), acidic perspiration (fibre breakdown), absence of rotation among multiple straps. The Portugieser's 20mm lug width, being slender with pronounced curvature, concentrates flexion stress in precise zones: stitching monitoring is critical after the twelfth month. Vegetable-tanned leathers develop aesthetic patina whilst maintaining structure, whereas industrial tannages tend toward brittleness.