Oris
Divers 65 01 733 7707 4051 OSC-HEL-Set— lug 20mm

The Oris Divers 65 features a lug width of 20 millimetres. This configuration, positioned between the common 18 mm and the prevalent 22 mm standards, requires purpose-built straps. To verify compatibility, measure the internal distance between the two lugs of the case using a digital calliper: the value must read precisely 20 mm.

For the Divers 65, we recommend three primary options: vegetable-tanned alligator for refined comfort and rapid drying capability in marine environments; nylon NATO strap for underwater practicality and single-handed changeability; FKM rubber for professional immersions, ensuring inertness against marine chemical solvents. Selection depends on predominant use: professional, recreational, or formal contexts.

Strap replacement requires a spring bar tool to extract the lug springs. Locate the small grooves inside each lug, insert the tool's flat tip, apply gentle downward pressure, and the previous strap will disengage. Repeat on the opposite side, then align the new strap's passages with the case lugs and press until the safety click engages.

Yes, provided they feature the certified 20 mm lug width. Premium Italian leather straps, such as those from Milano Straps, guarantee complete compatibility whilst maintaining superior quality standards. Always verify that the lower passage adheres perfectly to the case's curvature to prevent lateral shifting.

A quality leather strap (alligator or calf leather) under recreational use typically lasts 3-4 years before fibre failure. With frequent exposure to saltwater and perspiration, durability reduces to 2-3 years. Vegetable-tanned straps develop a protective patina extending functional life; regular maintenance with marine-specific leather creams significantly extends this timeframe.