Strap for Oris Divers 65 01 733 7720 4051

The lug width of the Oris Divers 65 01 733 7720 4051 is 21mm. This width is standard for watch cases measuring 42mm in diameter and is compatible with all 21mm artisanal straps in our catalogue. To verify the measurement, use a caliper or ruler between the two lateral lugs where the strap attaches.

The ideal strap depends on intended use. For formal elegance we recommend alligator with vegetable tanning in brown or black, which emphasises the vintage character of the case. For daily practicality and aquatic environments, a NATO-style fabric strap or vulcanised rubber maintains the model's diving credentials. Brushed calf leather provides excellent balance, developing character-rich patina over time.

Strap replacement requires a dedicated tool (spring bar tool) to compress the elastic pins at the anse extremities. Insert the flat tip of the tool into the small opening beneath each lug, compress the pin, and slide out the old strap. Install the new strap by aligning the holes with the lugs, then release the pin. If uncertain, contact our team for professional replacement at Casati Milano.

Yes, any strap with 21mm lug width is compatible with the Oris Divers 65 01 733 7720 4051. Our artisanal straps are manufactured to elevated quality standards and guarantee perfect fit without lateral play. We recommend premium leathers (alligator, shell cordovan, calf) to maximise longevity and patina development over time.

Durability depends on material and usage context. An alligator strap with vegetable tanning lasts 5–8 years under moderate daily wear, developing rich patina. Brushed calf leather offers 4–6 years before replacement is advisable. Vulcanised rubber achieves superior durability (7–10 years) as it resists water and perspiration degradation. Sunlight exposure, washing frequency, and salt-water contact accelerate ageing.