Oris · Classic

Strap for Classic Date 42 Stainless Steel - Rose Gold / 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 4334-07 8 20 63
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 4334-07 8 20 63

Selected for the 20 mm lug width

All 20 mm straps →

The Classic 01 733 7594 4334-07 8 20 63, seen from the bench

The Oris Classic reference 01 733 7594 4334-07 8 20 63 is equipped with the Oris 733 automatic caliber with hour, minute, second and date indication. The model features 20mm lugs for the strap. The movement offers essential daily use functions with an automatic winding mechanism.

Frequently asked questions

What is the lug width of the Oris Classic 01 733 7594 4334-07 8 20 63?

The lug width is 20 millimetres. This specific measurement is critical for strap compatibility: 18mm straps will be loose, whilst 22mm straps will not fit into the lugs. Measurement should be taken from the inside wall of one lug to the other, at the horizontal pin position.

Which strap pairs best with the Oris Classic 01 733 7594 4334-07 8 20 63?

For a watch of this technical and classical character, we recommend alligator straps in cognac for formal wear, vegetable-tanned calf for patina development over time, or cotton NATO for daily use. The choice depends on intended deployment: the construction quality of these materials amplifies the aesthetic rigour of the timepiece.

How do I change the strap on the Oris Classic 01 733 7594 4334-07 8 20 63?

Strap change is performed by extracting the 20-millimetre spring bars. Use a dedicated spring bar tool to avoid scratching the satin-finished steel case. The pins must be extracted horizontally with precise, symmetrical movements to avoid compromising the lug seats. Once removed, the new 20mm strap is fitted by sliding the pins into the lugs until the safety click is felt.

Can I use quality aftermarket straps on this watch?

Absolutely. The Oris Classic 01 733 7594 4334-07 8 20 63, with its 20mm lug width, is ideal for artisanal aftermarket straps. Specialist horology brands offer straps in alligator, shell cordovan, vegetable-tanned calf, and FKM rubber, all available in the specific 20mm size, ensuring compatibility and superior construction quality.

How long does a leather strap last on the Oris Classic 01 733 7594 4334-07 8 20 63?

Leather strap longevity depends on material quality and wear pattern. An alligator or shell cordovan strap of quality craftsmanship can withstand 3-5 years of moderate daily use. Vegetable-tanned calf develops protective patina and may last longer. Leather fears excessive moisture and salt perspiration: periodic maintenance with natural waxes significantly extends strap lifespan.

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