Strap for Pilot's Watch Spitfire Chronograph Stainless Steel / Black / Italian / Strap

The lug width of the IWC Pilot IW3706-12 is 20 millimetres. This measurement defines the space between the spring bar attachments on the case and is essential for aftermarket strap compatibility. Always verify the internal width of the spring bar slots before ordering a replacement strap.

For this aviation chronograph, alligator in black or brown is the most coherent choice with historical pilot aesthetics. Alternatively, shell cordovan develops visible patina over time, whilst vegetable-tanned calf offers versatility and dramatic ageing. Military-grey nylon Cordura NATO straps emphasise the instrument's tactical character.

Remove the spring bars from the case using a dedicated spring bar remover or a thin flat tool. Gently press one spring bar inward until it disengages. Repeat on the other side. Insert the spring bars into the new strap, aligning the holes, then secure the strap to the case by pressing the spring bars until fully engaged. Verify proper positioning.

Yes, provided the strap is specifically crafted for 20mm lug width. High-quality artisanal aftermarket straps maintain or improve fit and aesthetics compared to original straps. Ensure stitching is straight, the material is premium-grade, and attachments are stainless steel for case compatibility.

A premium leather strap (alligator, shell cordovan, vegetable-tanned calf) with daily wear typically lasts 2 to 4 years. Longevity varies based on wear frequency, exposure to moisture and sweat, and maintenance care. A well-preserved strap can last significantly longer. Regular maintenance with leather-specific creams extends strap lifespan.