Strap for Divers Sixty-Five 40 Stainless Steel / Blue / Rubber

The lug width (also called anse width) of the Oris Divers 65 01 733 7707 4055-07 4 20 18 is precisely 20 millimetres. This is the distance between the two spring bars protruding from the case at 12 and 6 o'clock positions. Any compatible strap must feature an internal width of 20 mm to fit correctly. You can verify this measurement with a digital calliper positioned perpendicular to the lugs.

The ideal choice depends on intended use and aesthetic preference. For formal occasions, we recommend a dark brown alligator or grey taupe shell cordovan strap, which harmonise beautifully with the tropical beige dial. For daily wear or diving, a black vulcanised rubber or polyamide NATO strap offers moisture resistance and practicality. If you prefer natural authenticity, a vegetable-tanned leather strap develops a unique patina over time, becoming richer with age and use.

Changing the strap requires a spring bar tool and a well-lit, flat work surface. Insert the forked tip of the spring bar tool into the small hole adjacent to one of the lugs, then apply gentle pressure towards the case body to compress the internal spring. The lug will retract, allowing you to remove the old strap end. Repeat from the opposite side. Align the new strap's holes with the protruding spring bars, then press firmly with the tool until you feel the audible click of engagement.

Any strap with a 20-millimetre lug width is compatible with this reference. milanostraps.it offers a dedicated collection of 20 mm straps in leather, NATO, rubber, and shell cordovan, selected for aesthetic harmony and construction quality. Always verify that the internal strap width is exactly 20 mm and that materials are moisture-resistant, as the Divers 65 is engineered for marine environments.

Leather strap longevity depends on material type, frequency of use, and environmental conditions. A quality artisanal alligator or shell cordovan strap can last 5–7 years with moderate wear and regular maintenance—occasional cleaning, drying after water exposure, and annual conditioning. Vegetable-tanned leather deteriorates faster if frequently exposed to salt water, but compensates by developing a visually rich patina. Rubber and NATO straps offer superior durability (8–10 years) but require periodic inspection for elasticity and stitch integrity.