Strap for Aquis Date 36.5 Stainless Steel / White - Diamond / Textile

The Oris Aquis 01 733 7731 4191-07 5 18 45FC features an 18mm lug width. This dimension represents the classic standard for compact diver watches and corresponds to the internal space between the lugs where the strap attaches. It is critical to verify this measurement with precision before ordering an aftermarket strap, as any deviation of even half a millimetre would result in instability at the attachment point.

For the Oris Aquis 01 733 7731 4191-07 5 18 45FC, we recommend three principal options. Vegetable-tanned alligator (dark cognac or black) enhances formal purity whilst maintaining natural texture; coarse-grain calfskin transmits tool-watch coherence; navy or titanium-grey rubber ensures absolute water resistance. Your choice depends on intended use frequency and the value you place on natural patina development over time.

Strap replacement requires extraction of the spring bars from the case lugs. Use a proper removal tool or a spring bar squeezer, applying inward pressure to release the bar. Remove the old strap, verify that the spring bars remain correctly seated, and insert the new strap, aligning it precisely with the lugs. Professional fitting ensures uniform tension without risk of case damage.

Yes, provided they strictly respect the 18mm lug width specification. Lug width is the determining parameter. Bespoke Casati Milano straps are manufactured to precise technical specifications to guarantee stable attachment without negative tolerances. Always verify that the supplier explicitly states compatibility with 18mm lugs rather than approximations such as 'approximately 18mm'.

A high-quality vegetable-tanned leather strap (Hermès, Schedoni standard) typically lasts 3-5 years with daily use on a diver. Resistance to saltwater and humidity is elevated when tanning is executed without synthetic plasticiser agents. Rubber straps guarantee longer service life (5-7 years), whilst calfskin requires periodic conditioning with natural oils to maintain elasticity and prevent cracking.