Strap for Pilot's Watch Double Chronograph Top Gun Ceratanium

The lug width (misura ansa) of the IWC Pilot IW3718-15 is 21 millimetres. This measurement represents the internal distance between the two attachment holes on the case and determines strap compatibility. A 21mm strap fits perfectly between the lugs without play or excessive friction. It is essential not to confuse this measurement with the case diameter (44mm): lug width is the determining characteristic for compatibility.

For the Ceratanium case of the IW3718-15, we recommend three primary choices: alligator leather in neutral tones (grey, dark brown, or black) for formal elegance with fine grain; shell cordovan for those desiring contrast with natural lustre patina; vegetable-tanned calf leather for balance between accessibility and artisanal quality. NATO straps in nylon are ideal if the watch is used as an operational tool, whilst FKM rubber remains the most practical choice for humid environments. Selection depends on daily use and personal style.

Strap replacement requires a pressure tool and replacement tip compatible with the case's attachment holes. Unscrew or remove the spring bars that hold the strap between the lugs, extract the old strap, align the new one, and reinsert the bars. Note: the Ceratanium case of the IW3718-15 is scratch-resistant but not indestructible; use plastic-coated tools to avoid damaging the bezel. If uncertain, the Casati Milano atelier offers strap change service with guarantee of correct application.

Yes, absolutely, and it is recommended. Many high-quality aftermarket straps exceed OEM standards in materials and craftsmanship. The key is selecting a 21mm strap with correctly-dimensioned lug width and quality materials (genuine alligator, shell cordovan, vegetable-tanned leather). On milanostraps.it you will find verified compatible straps for the IW3718-15, customisable in sizes, colours, and finishes. Atelier Casati Milano also offers bespoke straps with personal leather selection.

A high-quality artisanal leather strap (alligator, shell cordovan, or vegetable-tanned calf) used daily typically lasts 18–36 months, depending on ambient humidity and frequency of wear. Shell cordovan tends to last longer due to fibre density; alligator and calf require regular maintenance (gentle cleaning, drying after rain, occasionally light nourishing cream). NATO and rubber straps last considerably longer but remain replaceable and inexpensive. Atelier Casati Milano provides 18-month warranty on bespoke straps, covering manufacturing defects.