Strap for Ventura S Quartz 34.5 Stainless Steel / Black 3D

The Hamilton Ventura H24251330 features 17.00 mm lug width, a specific and non-standard measurement that requires specially designed straps for this reference. It is essential to measure the lugs accurately with a digital calliper, positioning it perpendicularly across the centre of the lug and excluding the rounded terminals, to avoid compatibility issues.

The ideal strap depends on your intended use. For formal occasions, we recommend black alligator or shell cordovan, which emphasise the elegant tonneau case geometry. For everyday versatility, a vegetable-tanned calf in warm brown tones offers the most balanced solution. For casual and sporty wear, NATO straps in Cordura canvas—blue or military green—maintain the distinctive design without adding visual weight to the dial.

Changing the strap on the Ventura requires minimal tools: a spring bar tool or a small, flat, non-sharp blade. Insert the tool beneath the strap terminal to release the internal spring, lift away the old strap, and reverse the process to install the new one. Work gently to avoid scratching the steel case. For those preferring professional assistance, the Casati Milano atelier offers strap-change services by appointment.

Yes, provided you select the correct lug width with precision. All Milan Straps 17 mm straps are compatible with the Ventura H24251330. Ensure that the strap width does not exceed 17.2 mm and does not fall below 16.8 mm, as this tolerance is critical for a proper fit to the steel lugs. Italian-made, bespoke straps guarantee perfect compatibility.

Longevity depends on material quality and usage patterns. A shell cordovan strap typically lasts 5–7 years with daily wear and regular maintenance (cleaning and conditioning every 3–4 months). Vegetable-tanned calf achieves 3–5 years but develops a more compelling patina over time. Premium alligator can exceed 7 years. Replacement is straightforward and recommended every 4–5 years to maintain your Ventura in peak aesthetic condition.