Strap for Aquis Date 43.5 Stainless Steel / Green / Rubber

The lug width of the 01 733 7789 4157-07 4 23 37FC is 23mm. This is a non-standard dimension deliberately chosen by Oris to proportion the 43.50mm case diameter to robust wrists. You can verify it by measuring the inner space between the lugs with a digital calliper, positioned perpendicular to the case plane.

For the 01 733 7789 4157-07 4 23 37FC we recommend Nile alligator with vegetable tanning, thickness 1.4–1.6mm and medium grain texture. It develops rich patina and natural grip in fresh water. Professional alternative: military-spec NATO in polyamide for absolute water resistance and rapid changes. If you perform frequent diving, rotate alligator in dry season and FKM vulcanised rubber in humid season to maximise durability.

For the 01 733 7789 4157-07 4 23 37FC: extract the spring bar pins from the lugs using a dedicated spring bar tool. Position beneath the lug from below, press slightly upward and the pin releases. Remove the old strap from upper and lower lugs. Insert the new strap, aligning the holes to the lugs, then reinsert the spring bar pins until you hear a click. Verify there is no residual play.

Yes. The 01 733 7789 4157-07 4 23 37FC accepts certified 23mm lug width aftermarket straps. On milanostraps.it you will find a dedicated collection: vegetable alligator, refined calf, NATO and technical rubber, all in 23mm. Each strap is pre-tested on Oris Aquis cases to verify positioning compatibility and spring bar functionality.

Duration depends on material and exposure. Vegetable-tanned alligator: 4–6 years of intensive use (daily wear with saltwater exposure). Vegetable calf: 2–3 years on urban wrists, less if frequently exposed to chlorine or seawater. Store the strap in a dry environment, away from heat sources. To extend life: rotate between alligator and rubber by season, dry quickly after immersion, apply natural conditioner every 6 months.