IWC
Da Vinci IW3728-11— lug 19mm

The lug width of the IWC Da Vinci IW3728-11 is 19 millimetres. It is measured from the inner edge of one lug to the inner edge of the opposite lug, excluding any transition curve. This measurement is not a universal standard, so it is important to verify it precisely before ordering a replacement strap.

For the Da Vinci IW3728-11, we recommend a natural or dark-toned alligator for a formal aesthetic, or a vegetable-tanned calf leather for those seeking daily versatility. Shell cordovan is excellent for those in environments requiring durability. For a sports-oriented approach, a fine linen NATO keeps the chronograph's instrumental character. The choice depends on actual use and wearing context.

To change the strap, you will need two tools: a spring bar tool (lug-hole lever) and a soft plastic hammer. Position the tool along the lug hole to release the anchor spring, then extract the bar. Repeat on the opposite lug. To install the new strap, insert the bar on one lug first, then press gently on the opposite lug until you hear the spring engage. If uncertain, a professional watchmaker will complete the operation in minutes.

Yes, provided the strap is constructed for 19mm lugs. The IWC Da Vinci IW3728-11 uses a non-standard lug width compared to sports chronographs (20mm) or compact dress watches (18mm), so it is essential to verify the strap's technical specifications. High-quality bespoke straps in alligator, calf or shell cordovan integrate perfectly with the classic character of this chronograph.

The lifespan of a leather strap depends on frequency of wear and tanning quality. A superior-grade alligator or calf, subject to regular maintenance (cleaning with a dry soft cloth), can last 3-5 years with daily wear. If worn occasionally, lifespan extends to 5-8 years. Exposure to water, excessive humidity and direct sunlight significantly reduces longevity. A natural rubber or shell cordovan strap has greater longevity in humid environments.