Oris · Classic
Strap for Classic Date 42 Rose Gold / Silver
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
The Classic 01 733 7594 4831-07 6 20 12, seen from the bench
Frequently asked questions
What is the lug width of the Oris Classic 01 733 7594 4831-07 6 20 12?
The lug width is 20mm. This measurement represents the geometric space between the case lugs, where the strap is fitted. Measuring the lug width is straightforward: locate the lateral holes on the case (where the spring bars insert), then measure the internal distance between the edges of these holes using a metal ruler. A 20mm strap fits perfectly, with no play and no forcing required.
Which strap is most suitable for the Oris Classic 01 733 7594 4831-07 6 20 12?
The ideal strap depends on intended use and context. For construction coherence and visual authenticity, we recommend alligator or calf leather with vegetable tanning: the natural texture of the leather complements the satin-brushed case and clean dial of the Classic. A dark brown or cognac offers sartorial elegance, whilst intense black amplifies technical severity. For sporting or hiking use, a cotton NATO strap is the conscious choice. Rubber is reserved for very humid environments or occasional underwater wear.
How do you change the strap on an Oris Classic 01 733 7594 4831-07 6 20 12?
Removing the strap requires two tools: a spring bar tool (specific implement with blunt tip) or a Swiss Army knife. Position the watch with the lug facing upward. Insert the tip of the spring bar tool into the small lateral hole on the case (at the base of the lug), which allows you to push the spring bar outward without damaging the case. The spring bar exits the case and old strap. Repeat on the other side. Insert the new strap, aligning the holes with the spring bars, and push with the tool until you hear a click. A 5-minute operation.
Which aftermarket strap is compatible with the Oris Classic 01 733 7594 4831-07 6 20 12?
Any strap with a 20mm lug width is compatible. milanostraps.it offers a curated selection of 20mm straps in leather, cotton NATO and rubber. Always verify that the strap is labelled as '20mm' and that the geometry of the spring bar seats is standard (ISO norm specifies two simple circular holes). Avoid straps with proprietary geometries or non-standard attachment mechanisms.
How long does a leather strap last on watches like the Oris Classic 01 733 7594 4831-07 6 20 12?
A calf strap with vegetable tanning lasts an average of 3-5 years of daily wear, developing a natural patina that tells the story of conscious use. Shell cordovan, being denser, exceeds 7-10 years whilst maintaining structural rigidity. Alligator, with less uniform grain, lasts 4-6 years. Lifespan depends on several factors: ambient humidity, frequency of water exposure, wrist perspiration, intensity of use. Store the strap away from heat sources and excessive humidity to prolong its life. A strap is not a lifetime component: it is an artisanal consumable that deserves periodic replacement.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
