Strap for HydroConquest 41 Automatic Stainless Steel / Ceramic / Black / Rubber

The lug width is 21 millimetres. This dimension is critical for strap selection: it measures the distance between the two attachment pins on the case lugs. On milanostraps.it you can filter directly by 21mm straps, guaranteeing full compatibility.

The choice depends on use case and personal aesthetic. For elegant formality with sporting intent: alligator in natural grain, dark blue or tobacco brown. For marine durability and lifestyle: shell cordovan or vegetable-tanned leather that develops patina over time. For aquatic versatility: NATO strap in Cordura or nylon with quick-change capability. Casati Milano personalises every option to fit your wrist and style.

The strap is secured with spring bar pins. Obtain a spring bar tool (T-shaped instrument): position the fork around the inner pin from the dial side, push towards the case body so the pin retracts, remove the old strap. Align the new strap to the lug holes, reinsert the pin ensuring it locks on both sides. Simple operation, but if unsure, Casati Milano can do it in atelier.

Yes, absolutely. The 21mm lug width is a widespread standard in the aftermarket. Milanostraps.it offers a complete selection of compatible 21mm straps in premium leather (alligator, calf, shell cordovan) and technical fabrics. These straps match the fit of the original Longines strap, with added personalisation (monogram, stitching colour, deployante buckle).

A premium leather strap with vegetable tanning (alligator, calf, shell cordovan) lasts 3–5 years with daily wear, lengthening over time and developing natural patina that increases character. Factors reducing lifespan: frequent direct water exposure, unwashed perspiration, excessive humidity. Synthetic NATO straps last 5–7 years. Casati Milano's warranty on bespoke straps is 18 months against manufacturing defects, not natural leather wear.