Strap for Pilot's Watch Chronograph Tribute to 3705

The lug width of the IW3879-05 is 20mm. This measurement represents the internal distance between the lugs of the case and determines compatibility with aftermarket straps. A 20mm strap couples perfectly without lateral play, ensuring structural rigidity and mounting security.

For the IW3879-05 in Ceratanium, the ideal strap is crocodile or shell cordovan: the former offers elegant visual contrast with the ceramic case, the latter develops natural patina over time that harmonises well with the aviator aesthetic. A solid alternative is vegetable-tanned calf leather for those seeking durability and construction traceability. For technical use, Croslite rubber is appropriate in high-humidity conditions.

Strap replacement requires specific tools: a spring bar tool and a small screwdriver. Insert the tool tip into one of the vertical holes of the lugs, lift the internal spring slightly, and extract the lug from its seat. Repeat on the other side. To mount the new strap, position one side in the seat first, then use the tool to compress the spring of the second lug. Proceed with care to avoid scratching the Ceratanium.

Yes, any strap in 20mm size is compatible with the IW3879-05. It is essential to verify the lug width before purchase. Artisanal straps available online come in this dimension with personalisation options (precise sizing, initials, stitching thread choice). Compatibility is guaranteed provided the width is exactly 20mm.

Durability depends on material and use. A crocodile strap typically lasts 5-7 years under normal conditions; shell cordovan can exceed 10 years thanks to the density of equine leather. Vegetable-tanned calf leather has an average life of 4-6 years. Primary wear occurs at the lug (dynamic contact point with the case) and the buckle. Proper conservation (drying after moisture exposure, protection from direct sunlight) significantly extends longevity.