Strap for Divers Sixty-Five 36 Herzog Loibner Edition

The lug width (also known as strap width) of the Oris Divers 65 01 733 7747 3986-Set is exactly 17 millimetres. This technical specification determines which strap width is compatible with the model. Measuring the lug width correctly is essential: place a digital calliper perpendicular to the case plane, between one lug and the other, at the point of maximum width. All straps proposed by Milano Straps for the 17mm size have been tested on this model.

For the Divers 65, straps in vegetable-tanned alligator leather (dark tones, aged cognac), quality European calf leather (dark brown or deep blue), cotton NATO (grey, warm beige, navy blue) or structured rubber (black or dark grey) are recommended. The choice depends on usage: alligator or calf for sustained elegance, NATO for sporting practicality, rubber for water-based activities. The bronze case pairs naturally with dark and neutral tones, emphasising the patina development over time.

Strap replacement is carried out via the spring bars (spring-loaded bars) located at the ends of each lug. Use a dedicated tool (spring bar tool) to compress the spring and release the old strap from the lugs. Position the new spring bars in the artisanal strap, align the first end with the lower lug, compress the spring, insert the second end into the upper lug and release. The operation takes approximately 5 minutes. If you are not experienced, Casati Milano offers strap replacement service by appointment at the Milan atelier.

Yes, any strap with certified 17mm lug width is theoretically compatible. However, construction quality varies significantly: artisanal straps in full-grain leather, created with vegetable tanning and finished manually, ensure mechanical and aesthetic compatibility that lasts over time. We recommend verifying that the strap is free from cutting defects and that the spring bars are stable in their housings before proceeding with purchase.

The lifespan of a leather strap depends on the material quality, frequency of use and environmental conditions. A high-quality alligator or calf strap, with vegetable tanning and minimum thickness of 1.4mm, maintains structural integrity for 5-7 years with daily wear. In humid climates or with frequent water contact, the leather ageing process accelerates, but generates the patina desired by bronze watch collectors. The buckle or deployant tends to wear before the leather itself: annual servicing with replacement of metal fittings significantly extends the total lifespan of the strap.