IWC
Pilot IW3713-22 (aka: IW371322)— lug 21mm

The IWC Pilot IW3713-22 features a lug width of 21.00mm. This dimension is proprietary to the Pilot line of this generation and must be measured precisely at the lateral attachments of the case to ensure compatibility with aftermarket straps.

For a chronograph in platinum, we recommend alligator in cognac brown or shell cordovan, materials that create warm contrast with the coldness of noble metal. Black remains a timeless formal choice, whilst vegetable-tanned calf offers daily versatility without aesthetic compromise.

Use a spring bar removal tool or small flathead screwdriver to lift the lateral bayonet springs inside the case lugs. Remove the old strap by pushing the spring forward, then insert the new one by aligning one lug first before pushing until the spring clicks. Reversible operation in 3 minutes for those experienced.

Yes, provided the lug width is exactly 21mm. Compatible 21mm artisanal straps offer superior quality to originals through the use of noble leathers such as alligator, shell cordovan and vegetable tanning. Always verify width before ordering.

A noble leather strap, with ordinary maintenance (occasional cleaning, protection from salt water), lasts 4-6 years on a daily-worn watch. Shell cordovan and alligator age beautifully, developing sought-after patina. Prolonged exposure to intense sunlight and humidity accelerates wear.