IWC
Pilot IW3711-27— lug 21mm

The lug width of the IWC Pilot IW3711-27 is 21 millimetres. This measurement is taken perpendicular to the lugs, inside-to-inside. It is essential to verify this dimension with precision before purchasing an aftermarket strap, as any tolerance error would result in improper fit.

For the platinum case and technical profile of the IW3711-27, alligator is the most natural choice: its regular grain dialogues with the rational geometry of the case. Excellent alternatives include brown cordovan, which introduces warmth with dignity, or vegetable-tanned leather for those who appreciate visible ageing. Avoid synthetic materials or glossy plastics; platinum requires materials that age nobly.

The strap is replaced by removing the spring bars that connect it to the lugs. Use a spring bar tool to compress the internal pins gently and extract the old strap. Insert the new 21mm strap, aligning the holes with the pins, then press until engagement clicks. If you are not experienced, entrust the replacement to a professional watchmaker to avoid damage to the lugs.

Yes, the IW3711-27 is fully compatible with high-quality 21mm aftermarket straps. Milano Straps offers a selection of artisanal straps in alligator, cordovan, calf leather and fabric, all customisable in width and finishing. We recommend straps constructed with robust spring bars and multi-ply nylon stitching to ensure durability and safety over time.

Durability depends on the material and frequency of use. A quality alligator or well-tanned cordovan lasts 5-7 years with daily use, ageing gracefully. Vegetable-tanned calf evolves over time and can last 4-6 years, developing characteristic patina. Fabric (NATO or woven cotton) can exceed 10 years if not exposed to excessive moisture. Milano Straps provides an 18-month guarantee on all artisanal straps.