Strap for F77 Titanium / Lapis Lazuli / Bracelet

The Nivada Grenchen F77 68017A77 features a lug width of 16mm, a rare and refined specification that characterises this 37mm case specifically. This measurement demands bespoke straps: standard universal straps (18mm, 20mm, 22mm) are incompatible. To verify compatibility, measure the internal distance between the spring bar attachments: it must be exactly 16mm.

The optimal choice is an alligator strap with vegetable tanning, which complements the minimalist aesthetic and natural ageing of the titanium case. Alternatively, vegetable-tanned leather with visible grain offers robustness and aesthetic restraint. For extreme conditions, a cotton NATO strap ensures maximum functionality and durability without maintenance requirements.

Do not attempt this independently. The lugs of the 68017A77 require precision: consult a professional watchmaker or contact the Casati Milano atelier directly, which employs specialised tools to prevent chipping. Titanium, though resistant, is susceptible to irregular deformation if handled with improvised instruments.

No, universal aftermarket straps (18mm, 20mm) are incompatible with the 68017A77. The 16mm lug width requires bespoke straps. Milano Straps offers a specialised 16mm collection: alligator leather, calf, NATO, and FKM rubber, all available online and customisable according to your colour preferences.

An alligator strap with vegetable tanning lasts approximately 5–7 years of daily use, depending on ambient humidity and maintenance. Vegetable-tanned leather develops a natural patina over time, increasing the aesthetic value of the object. Structured calf leather offers similar durability but with less aesthetic evolution. Every Casati Milano strap is crafted from premium selected leather, guaranteeing superior durability compared to standard commercial straps.