IWC
Portugieser IW5007-08 (aka: IW500708, 500708, 5007-08)— lug 20mm

The lug width of the Portugieser IW5007-08 is 20 millimeters. It is measured from the inner point of one welding to the other, between the case shoulders. This standard is critical for selecting compatible straps and represents the proportional signature of this classic model.

For the Portugieser IW5007-08, cognac brown or black alligator leather, or aged vintage calf leather, enhance the dress watch character of the model. Alternatively, a technical rubber strap or woven NATO offer versatility while maintaining aesthetic coherence. The choice depends on primary use: formal with premium leather, versatile with rubber or NATO.

Strap replacement is done through the spring bar attachments. With a dedicated tool or thin screwdriver, push laterally to release the spring, completely extract the pin, and replace the strap. It is a reversible and quick operation; if you prefer to avoid risks, the Casati Milano atelier offers custom strap changing service with aesthetic consultation.

Yes, numerous quality aftermarket straps are compatible with the 20mm lug width. Milano Straps provides handcrafted leather straps with customized measurements, also customizable with initials and choice of stitching thread. The Casati Milano atelier also creates bespoke solutions with direct consultation and 18-month warranty.

A quality leather strap, such as alligator or calf, lasts an average of 3-5 years with regular use and ordinary care (avoid getting wet, protect from excessive humidity). The leather ages by developing patina and character; if necessary, it can be easily replaced thanks to the standard 20mm spring bar attachments. Technical materials such as rubber or silicone offer superior durability, up to 7-8 years.