Strap for Aquis Date 43 Stainless Steel / Blue / Rubber

The lug width of the Oris Aquis 01 733 7730 4135-07 4 24 65EB is 20 mm. This measurement, taken between the internal lugs of the case (shoulder to shoulder), determines the precise compatibility of any aftermarket strap. A digital calliper allows accurate measurement to prevent ordering errors.

For this 43 mm model, we suggest an alligator or shell cordovan strap with vegetable tanning (cognac brown or dark brown) if you will wear the watch in mixed formal and casual contexts. If you intend the Aquis as a genuine diving instrument, a NATO strap in grey-black nylon or a sport FKM rubber are the most functional choices, as they dry rapidly and maintain grip underwater.

The strap is removed by extracting the lateral spring bar pins that connect the strap to the case. Use a dedicated tool (thin-leverage pry bar) to release the spring bar's return mechanism without damaging the case lugs. Once released, the pin slides out and allows for strap replacement. It is advisable to support the wrist during the operation to prevent accidental watch drops.

Any strap with a 20 mm lug width is perfectly compatible. We recommend specialised brands that guarantee consistent thickness (1.4–1.6 mm for leather, 1.8–2.0 mm for rubber) and stainless steel passants to prevent oxidation. Artisanal straps with vegetable tanning offer the best balance between aesthetics and durability for the technical character of this Aquis.

A vegetable-tanned leather strap of quality, worn daily, has an average lifespan of 3–5 years before replacement is required, depending on the usage environment and maintenance. If frequently exposed to water (diving, swimming), the lifespan reduces to 18–24 months. A NATO strap in synthetic fabric lasts 5–7 years with minimal wear. Periodic rotation between different straps extends the lifespan of each individual piece.