Strap for Portuguese Chrono-Automatic White Gold / 80 Diamond

The lug width is 20 mm. This measurement is determined by the distance between the lugs (small metal pins beneath the case that support the strap). When purchasing a replacement strap, verify that the pin diameter matches the original IWC specification—typically 1.5 mm—to ensure precise fitting and impeccable aesthetics.

Alligator remains the historical choice for this collection: natural grain creates visual movement without excess, and vegetable-tanned alligator develops patina consistent with the white gold case. Shell cordovan offers subtle sheen and superior durability, ideal for those desiring pronounced character. Italian Calf maintains elegant chromatic proportions, whilst structured rubber represents a modern alternative for daily versatility.

The strap is replaced by removing the lug pins (small metal axes that pass horizontally through the case). A dedicated tool—a pin remover—is required, available through professional watchmakers or specialist ateliers. Avoid improvised methods: white gold is soft and scratches easily. If you lack expertise, entrust the operation to a professional to prevent case damage.

Any strap with a 20 mm lug width is compatible. However, not all 20 mm straps are equivalent: the pin diameter must match the original specification (1.5 mm), and the strap must be robust enough to support the white gold weight without settling over time. Italian artisanal straps, crafted from first-grade leather, guarantee superior build quality compared to economical industrial products.

Durability varies based on material, usage, and care. Quality alligator or shell cordovan, vegetable-tanned, typically last 3-5 years with moderate daily use. Calf leather tends to wear faster in humid climates. The natural patina that develops is not critical wear—rather, it indicates authentic aging. With periodic maintenance (cleaning, occasional conditioning), lifespan extends significantly. An inferior strap exhibits failure within 12-18 months.