Oris · Classic

Strap for Classic Date 42 Stainless Steel / Black / Bracelet

Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width20 mm
Case diameter42 mm
Reference01 733 7594 4094-07 8 20 61
FamilyClassic
MovementOris caliber Oris 733 hours, minutes, seconds | date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

Straps for the Classic 01 733 7594 4094-07 8 20 61

Selected for the 20 mm lug width

All 20 mm straps →

The Classic 01 733 7594 4094-07 8 20 61, seen from the bench

The Oris Classic 01 733 7594 4094-07 8 20 61 is a 42mm stainless steel watch embodying Swiss watchmaking philosophy. It features the Oris 733 automatic movement, developed on ETA 2824 base, paired with a sapphire crystal and 50m water resistance. The distinctive 20mm lug width creates a refined visual balance on the 42mm case, requiring precise strap selection. The dial maintains understated elegance with applied indices and characteristic proportions ensuring clear time reading.

Frequently asked questions

What is the lug width of the Oris Classic 01 733 7594 4094-07 8 20 61?

The lug width is 20mm. This non-standard, reduced measurement requires precise selection of compatible straps. Measure by positioning a digital calliper from the inner edges of one lug to the other, perpendicular to the case.

What is the best strap for the Oris Classic 01 733 7594 4094-07?

We recommend high-quality alligator with regular grain texture: it creates aesthetic synergy with the case's solidity. Alternatively, vegetable-tanned calf offers a velvety patina that ages beautifully. For versatile daily wear, robust cotton NATO or FKM rubber ensures durability and practicality.

How do I change the strap on the Oris Classic 01 733 7594 4094-07?

Strap change requires a specialised tool (spring bar tool) to extract the spring bars holding the strap in position. Remove the old strap, insert the new one aligning it correctly to the lugs, and secure the spring bars. If inexperienced, consult a professional watchmaker to avoid case damage.

Can I use an aftermarket 20mm strap on this watch?

Yes, absolutely. Any strap with a 20mm lug width is compatible. Quality depends on the manufacturer: we recommend specialised artisans who understand lug geometry and offer bespoke finishing. Alligator, shell cordovan, vegetable-tanned calf and NATO guarantee longevity and controlled aesthetics.

What is the average lifespan of a leather strap on this model?

A quality alligator or calf strap can last 5-8 years with ordinary care, longer if subjected to occasional maintenance (cleaning and hydration). NATO, being fabric, resists 8-10 years. FKM rubber typically lasts 4-6 years before losing elasticity. Lifespan depends on daily wear, UV exposure and climatic conditions.

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.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only