Strap for Divers Sixty-Five 40 Social Club Edition / Austin

The lug width of the Oris Divers 65 in this reference is 20 millimetres. This measurement is determined by the distance between the inner edges of the two lateral lugs on the case. To verify it, use a digital calliper or consult the strap label, which always displays the width in millimetres. A compatible strap must have a width of 20mm to fit perfectly onto the case pins.

It depends on the intended use. For classic elegance, alligator leather in vegetable tanning, dark brown or cognac, creates a striking contrast with the satin-brushed steel. For durability, calf leather in wide grain guarantees natural ageing and a rich patina. For maximum salt-water resistance and submersed environments, a 1000 denier polyamide NATO or FKM (Viton) rubber strap is a functional choice. The 20mm width accommodates all these combinations without bulk.

Changing the strap is straightforward and requires no watchmaking skills. Locate the two lateral pins on the Divers 65 case, visible when viewing the side of the lugs. Use a spring bar tool (a dedicated strap-change implement) or a small flathead screwdriver to gently compress the pin and extract it from the old strap. Align the new 20mm strap with the case holes and reinsert the pin. Ensure the strap is secure and the pins are fully seated. If you prefer professional assistance, consult the Casati Milano Atelier by appointment.

Yes, provided the strap is designed for a 20-millimetre lug width. Quality aftermarket straps in leather, NATO or rubber are fully compatible with the 01 733 7707 4051 OSC-ATX-Set. Ensure that the new strap has the same width and that the pins insert without excessive force. Bespoke straps, such as those from Milano Straps, are precisely dimensioned to eliminate play and instability, ensuring a precise fit.

Durability depends on the leather type, tanning method, and usage patterns. Alligator leather in vegetable tanning typically lasts 4–7 years with regular use and proper maintenance, developing a captivating patina over time. Calf leather in wide grain resists 3–5 years before showing significant wear. Avoid prolonged direct sunlight and unsalted fresh water, which weakens fibres. If you expose the Divers 65 to frequent diving, prefer rubber or NATO straps, which are more resistant to moisture and salt spray. Regular conditioning with leather-specific creams extends strap life by 1–2 years.