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

The lug width of the IW3711-20 is 21mm, a non-standard dimension requiring straps specifically cut to this measurement. This width is determined by the proportions of the 42mm case and ensures correct seating within the lateral lugs. To verify the measurement, position an internal calliper between the metal case lugs: the value obtained must be exactly 21mm.

Strap selection depends on intended use. For formal-business contexts, we recommend alligator in vegetable tanning, grey or black, which develops natural patina enhancing the Pilot's austere aesthetic. For daily intensive wear, aged calf offers immediate appeal and ages honourably under use. For sporting applications or humid environments, a rubber strap with stainless steel deployante provides practicality and durability. Shell cordovan suits those seeking naturally rigid and humidity-resistant leather.

Remove the strap using a spring bar tool. Position the watch on a mat, introduce the tool's tip into the small hole beneath the lug, pushing downward to release the internal spring. The lug will spring free. Repeat on the opposite side. To install the new strap, align the lugs with the case holes and press until you hear the spring lock click. Do not force: the Pilot's spring bar system is engineered for smooth insertion.

Yes, provided the strap is specifically cut to a 21mm lug width. Quality artisanal straps – such as those custom-made by specialist ateliers – fit the Pilot perfectly, guaranteeing superior construction and carefully selected materials. Avoid generic straps in 20mm or 22mm widths: they will not insert correctly into the lugs and create risk of case deformation over time.

Longevity depends on material, tanning method and usage. Vegetable-tanned alligator typically resists for 3-5 years with regular wear, developing an attractive patina in the first year. Aged calf has similar durability but shows signs of use more rapidly – which many consider an aesthetic merit. Shell cordovan, being a particularly hard vegetable-tanned leather, can last 5-7 years. A moulded rubber strap typically lasts 4-6 years. With proper care (monthly cleaning, biannual conditioning), these durations extend significantly.