Strap for Pilot's Watch Chronograph Stainless Steel / Black / French / Bracelet

The lug width (also called anse width) of the IW3706-08 is 20 millimetres. This measurement refers to the distance between the lugs on the case where the strap attaches. It is a common standard for sports chronographs in this diameter category. To measure accurately, use a digital calliper to determine the perpendicular distance from the inside edge of one lug to the inside edge of the opposite lug.

The choice depends on intended use and aesthetic preference. For a formal-sportive approach, African alligator leather with a traditional deployante buckle emphasises the watch's serious character without compromise. For a vintage-forward dimension, vegetable-tanned calf leather develops a natural patina over time. To maintain authentic pilot credentials, NATO fabric or vulcanised rubber remain non-dress choices that dialogue with the aviator's spirit. Each material narrates a different relationship with the chronograph.

Use a spring bar removal tool (strap removal kit) to change the strap. Place the watch on a soft surface, locate the spring bars—the small springs that hold the strap to the case lugs—and gently press them towards the centre of the case to free the strap end. Once both ends are released, the strap will slide away. Installation of a new strap follows the reverse process: insert one end of the spring bar into the lug slot, position the strap end in the groove, then press the spring bar to secure it.

Yes, absolutely. High-quality aftermarket straps with the exact 20mm lug width are fully compatible with the IW3706-08. Milano Straps offers a curated selection of artisanal straps specifically dimensioned for this measurement. It is important to verify that the strap is crafted by artisans who understand aviator geometry, ensuring that both visual and ergonomic compatibility remains coherent with the watch's aviator spirit.

Lifespan depends on material type, intensity of wear, and maintenance discipline. Quality African alligator or vegetable-tanned calf leather typically lasts 5–7 years with moderate wear (non-daily). With intensive use, salty perspiration exposure (aviation environment), or neglected maintenance, this reduces to 3–5 years. Periodic conditioning with natural balm and protection from direct heat sources significantly extend strap life. Craftsmen at Casati Milano offer an 18-month warranty on bespoke straps.