Strap for Pilot's Watch Doppelchronograph Yellow Gold / White / German

The lug width of the IW3713-09 is 21 millimetres. This specific measurement accommodates robust and proportionate straps whilst ensuring both aesthetic balance and stability on the yellow gold case. Always measure the lugs between the inner shoulders of the case, without forcing.

Alligator leather with vegetable tanning is the optimal choice: it develops patina alongside the gold, creating continuous chromatic dialogue. Shell cordovan calf offers lustre and compact grain, ideal if you prefer homogeneous surface finish. For pure avionic vocation, heavyweight canvas NATO strap remains coherent with the model's heritage. Every material should incorporate a deployant clasp to protect the gold.

Use a spring bar removal tool to extract the elastic pin from one end, lifting gently. Once free, the strap slides away. For installation of the new strap, position the spring bar horizontally, insert the first lug end into the lug hole, then compress and snap the second end home. Always work on a soft surface to avoid scratching the case.

Yes, provided it is certified 21mm and manufactured with equivalent artisanal care. Always opt for premium leathers and certified construction; avoid generic online straps. Quality-compatible straps maintain legible lug attachment, soft inner layer, and sound stitching. Casati Milano offers bespoke customisation with 18-month guarantee.

A high-quality leather strap (alligator, cordovan, calf) lasts between 3 and 5 years with moderate wear (5–6 days weekly). Longevity depends on humidity, direct sunlight exposure, water contact, and wearer lifestyle. Vegetable-tanned leather ages more visibly but exhibits superior durability; chrome-tanned leather ages less perceptibly but deteriorates faster. Rotating between multiple straps significantly extends the lifespan of each strap.