Strap for Classic Date 37 Stainless Steel / Black

The lug width of the Oris Classic 01 733 7578 4064-07 5 18 11 is 18 millimetres. This measurement is the internal space between the two lugs of the case: a ruler positioned perpendicularly between the strap attachment points will confirm exactly 18 mm. This is the canonical proportion for a 37 mm dress watch, ensuring visual balance and compatibility with our artisanal straps.

For the minimalist profile of the Classic, we recommend brown alligator leather with vegetable tanning (the leather ages naturally, developing patina), or Bardigiano calf for those seeking an Italian alternative. A NATO strap in linen-cotton is ideal for summer, whilst a vulcanised FKM rubber strap is the sporty choice that maintains elegance. Avoid excessive decoration: the Classic demands simplicity.

Strap change is accomplished using a spring bar tool with a threaded tip, which compresses the internal spring without scratching the case. Position yourself in backlighting, insert the tip into the lateral lug hole until you feel the spring click, then extract the lug from one side. Atelier Casati Milano offers the service by appointment, guaranteeing millimetre-precision and protection of the case's brushed finish.

Yes, provided the lug width is exactly 18 millimetres. Our artisanal straps are fitted with stainless steel lugs, designed to accommodate any watch with an 18 mm lug width without dangerous tolerances. Always verify the measurement before purchase: no strap of 16 or 20 millimetres is compatible.

The lifespan of a leather strap depends on the tanning method and usage. An alligator or calf leather with vegetable tanning, worn daily, will last 3-4 years before showing signs of wear (loosening of stitches). With regular care (drying after rain, avoiding prolonged direct sunlight), longevity increases. NATO straps in fabric last longer but require frequent cleaning. Casati Milano recommends seasonal rotation to extend the life of each strap.