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

The Oris Divers 65 01 733 7707 4051 OSC-MIL-Set features a 20mm lug width. This measurement represents the internal distance between the flanks of the lugs that support the strap on the case, and it is the fundamental parameter for selecting compatible straps. The measurement should be taken from the internal edge on one side to the internal edge on the opposite side, at the maximum depth of the lug.

There is no single 'best' strap, but rather conscious choices tailored to context. For formal settings, black or dark brown alligator emphasises the minimalist geometry of the case. For aquatic use or extreme environments, vulcanised rubber or a cotton NATO is indispensable. For those who desire visible and tactile ageing, vegetable-tanned leather represents a long-term investment.

Strap replacement requires a tool called a spring bar tool or a stainless steel lever. Insert the tool between the lug and the metal support on the case, lifting gently to release the internal spring that holds the lug in place. Once the old strap is free, introduce the new one by aligning the small protrusions of the lug with the seats on the case, pressing until you hear the click of the spring locking into place. Every movement should be executed carefully to avoid scratching the case.

Absolutely yes. Any strap with a 20mm lug width is mechanically compatible. Choosing a quality aftermarket strap in leather, NATO, or rubber does not affect the watch's warranty and allows you to personalise the Divers 65 according to aesthetic taste and usage environments. Pay attention to the correct positioning of the spring bar to avoid premature wear.

Durability depends on the type of tanning and environmental exposure. A vegetable-tanned calf leather, if protected from saltwater and prolonged humidity, lasts 3-5 years before requiring replacement. Vulcanised rubber, being synthetic, lasts considerably longer (8-10 years) and requires no water protection. A cotton or synthetic NATO strap has durability similar to rubber. Frequent immersion compromises any organic strap; for serious diving use, rubber or NATO remain the only conscious option.