Strap for Portuguese Perpetual Calendar Tourbillon Edition “150 Years” Red Gold / White

The IWC Portugieser IW5045-01 features a lug width of 22 millimetres, measured internally between the two lugs. This dimension is standard across large-diameter Portugieser models and compatible with certified aftermarket straps of corresponding quality.

Alligator leather with fine grain remains the most harmonious choice: its regular texture and natural sheen enhance the warm temperature of rose gold whilst maintaining the watch's formal profile. For a contemporary interpretation, Japanese shell cordovan offers extraordinary longevity and inherent patina.

Position the watch vertically, use a flat-edged tool (preferably dedicated) to press the spring bar lug downward on one side, remove it gently, detach the strap and reverse the procedure with the new one. If you prefer to mitigate risk, consult a professional watchmaking service.

Yes, any strap with a certified 22-millimetre lug width is physically compatible. However, the quality of material and construction—particularly the buckle (ideally a push-button deployante)—determine whether the strap honours the proportions and material dignity of the watch.

A quality artisanal alligator or shell cordovan strap can last between 5 and 7 years with moderate daily use. Longevity depends on ambient humidity, frequency of wear and maintenance: avoid prolonged exposure to moisture and direct sunlight, clean regularly with a soft cloth, apply protective balm every 6–8 months.