IWC
Da Vinci IW3728-04— lug 19mm

The lug width of the IWC Da Vinci IW3728-04 is 19 millimetres. This dimension is specific to this generation of the Da Vinci and refers to the distance between the two case attachments where the strap sits. It is essential to verify this measurement before purchasing an aftermarket compatible strap.

For the Da Vinci IW3728-04, we recommend three primary options: alligator with fine grain, which complements the geometric lines of the stainless steel case; shell cordovan, a premium leather that develops a natural patina over time in harmony with the case; vegetable-tanned calf leather, ideal for those desiring seasonal versatility without aesthetic compromise. Your choice depends on daily usage and the dial's colour tone.

The strap on the IW3728-04 is changed via standard 19mm spring bars. Proceed as follows: use a spring bar tool to push the case attachments inward; gently remove the old strap by pulling it away; insert the new strap into the attachments, allowing the spring bars to click into their designated seats. Avoid abrupt movements to prevent case scratching. If unfamiliar with this procedure, entrust the task to a specialised service centre.

Yes, any strap with a 19mm lug width is technically compatible with the Da Vinci IW3728-04, provided the strap's attachments are standard. However, technical compatibility does not guarantee aesthetic harmony: the strap must be chosen with consideration for the case proportions (37mm) and dial geometry. Milano Straps artisanal straps are specifically calibrated to this measurement to ensure optimal fit and appearance.

A high-quality natural leather strap (alligator, cordovan, calf) typically lasts 3–5 years with moderate daily wear. Durability depends on numerous factors: humidity exposure, frequency of use, construction quality, tanning method, and strap care. Vegetable-tanned leathers require greater maintenance but develop unique patinas. Milano Straps artisanal straps, constructed with double stitching and brass rivets, guarantee superior longevity. Strap replacement is routine maintenance, not a defect.