Strap for Oris Classic 01 733 7719 4373

The lug width is 20mm. To verify correctly, measure with a calliper the internal space between the fixed lug ends of the case: the measurement must be exactly 20mm. Although less common than 22mm, this dimension provides access to a wide range of quality artisanal straps.

The most versatile choice is European calf leather with vegetable tanning: it ages elegantly, developing a noble patina, whilst maintaining aesthetic coherence with Oris's philosophy of simplicity and authenticity. For formal occasions, natural alligator is ideal. Textile NATO straps transform the timepiece into a practical daily companion. Avoid synthetic leathers: they contradict the model's DNA.

Remove the watch from your wrist. With the watch facing upwards, locate the spring bars (metal pins) that secure the strap to the case on both sides. Use a spring bar removal tool (or a small precision screwdriver) to push the bars downwards, sliding them out of the lugs. Insert the new strap, aligning the holes with the spring bars, and reposition the bars until they click into place. Verify the strap is completely secured before wearing.

Yes, aftermarket straps with 20mm lug width are fully compatible. The Oris Classic accepts straps of any material (leather, textile, rubber) provided they respect the 20mm dimension. Quality artisanal straps often offer superior construction details (stitching, finishing), thickness and initial patina compared to original straps.

A calf leather strap with vegetable tanning typically lasts 4–7 years in daily use, developing a visible patina. Genuine alligator exceeds 10 years, transforming subtly over time. Longevity depends on exposure to moisture, perspiration and thermal variations. Investing in a deployante clasp (hidden folding buckle) redistributes stress and significantly extends the lifespan of a leather strap.