IWC
Da Vinci IW3728-07— lug 19mm

The lug width of the IWC Da Vinci IW3728-07 is 19 mm. This dimension is proportionate to the 37 mm case diameter and represents the construction standard for this reference. It is essential to verify the exact measurement between the lugs to ensure compatibility with any aftermarket strap.

Alligator in dark brown or black is the formal choice of distinction, as its regular texture perfectly complements the case geometry. Vegetable-tanned calf represents an elegant alternative with naturally evolving patina. For sports-casual use, a robust textile NATO strap is ideal. The choice depends on usage context and personal aesthetic preference.

Strap replacement is accomplished via spring bars that connect the case lugs to the strap. Using a spring bar tool, gently press one of the pins to detach it from the old strap's slot, then insert the pin into the new strap. The operation takes approximately 2-3 minutes per side and is practicable by non-experts with care.

Yes, any strap with a 19 mm lug width is compatible with the IW3728-07. You will find many stock options online, or you can order a personalised one from Casati Milano. Compatibility is guaranteed by dimensional standardisation: nothing else is required.

A quality alligator or calf strap has a lifespan of 3-5 years with moderate daily wear, up to 7-10 years if worn occasionally. Lifespan depends on sun exposure, humidity, frequency of wear, and maintenance. Leather tends to dehydrate and stitching progressively weakens. A NATO strap lasts considerably longer (10+ years) due to fabric robustness.