Strap for Aquis Date 43.5 Bucherer Blue

The lug width is precisely 20 millimetres. This measurement corresponds to the space between the case lugs and is the critical parameter for selecting any compatible strap. Do not deviate from this specification: an 18mm strap will be loose, a 22mm strap will not fit into the attachment points.

The choice depends on your use case and context. For formal elegance, an alligator strap with vegetable tanning enhances the steel case; for daily practicality or wet environments, a cotton NATO or FKM rubber maintains the diver spirit. Vegetable-tanned calf leather offers the ideal compromise between sustainability and patina development over time.

The Oris Aquis 01 733 7730 4115-Set features standard integrated lugs on the case. To replace the strap, insert a spring bar tool into the slot beneath the lug, applying gentle pressure to expand the support pin, then remove the old strap. Repeat for the other lug and fit the new 20mm strap by aligning it with one lug first, then lowering it onto the other. If uncertain, the Casati Milano atelier offers professional replacement service.

Yes, provided they strictly respect the 20mm lug width specification. Artisanal leather straps from specialist ateliers such as Casati Milano are fully compatible and offer personalisation options that the original metal bracelet cannot provide. Always verify the manufacturer and fabrication tolerances: Milano Straps guarantees a flawless fit for this model.

A quality leather strap with vegetable tanning, worn daily, typically lasts 3 to 5 years before replacement becomes necessary. Longevity depends on water exposure, perspiration, maintenance, and material choice: alligator tends to be more durable than calf. FKM rubber has a similar lifespan but retains elastic properties longer if protected from direct UV rays.