Strap for Oris Aquis 01 733 7789 4135

The Oris Aquis 01 733 7789 4135 features a lug width of 23mm, a non-standard dimension that reflects the proportions of the 43mm case. This width is measured by positioning a calliper between the lugs internally, from wall to wall, excluding the thickness of the original strap entirely. Obtaining a precise measurement is essential to ensure proper fitment of any aftermarket alternative.

For a diver like the Aquis, the choice depends on intended use. A strap in vegetable-tanned leather offers elegance and a patina that develops over time, but requires maintenance in salt water environments. Chromexcel leather resists salt water better thanks to natural tannins. Rubber (FKM or silicone) is the ideal solution for intensive water use: waterproof, UV and salt resistant, and easily cleaned. Technical NATO straps offer maximum durability and practicality, though less sophisticated aesthetically.

Strap replacement requires a quality spring bar tool to avoid damage to the case. Position the watch on a soft surface to protect the finishing. Use the spring bar tool to gently compress the spring bar from the underside, creating space to extract it from the lugs. Proceed with the opposite side and remove the old strap. Insert the spring bar into the new strap, align the holes with the lugs, and compress gently until the bar clicks into place. Verify that the strap is secure before wearing the watch.

Yes, many specialised artisans produce bespoke straps for 23mm lug width. Milano Straps offers a complete selection of aftermarket straps in leather, NATO, and rubber specifically compatible with this dimension. Artisanal straps guarantee construction quality, authentic material selection, and customisation, allowing you to enhance the character of the Aquis with solutions unavailable in the mass-market.

Leather strap durability depends on frequency of use and environment. With regular maintenance and thorough drying after salt water exposure, a quality vegetable-tanned leather strap can last 3-5 years. Chromexcel leather, thanks to natural tannins, resists slightly longer in marine environments. If the watch is worn frequently in pools or at sea, alternating with rubber straps prolongs leather life. Preventive maintenance—cleaning, drying, and light conditioning—significantly extends lifespan.