Oris · Classic

Strap for Oris Classic 01 733 7594 4091

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 4091
FamilyClassic
MovementOris caliber Oris 733 Hours, Minutes, Seconds | Date

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 4091

Selected for the 20 mm lug width

All 20 mm straps →

The Classic 01 733 7594 4091, seen from the bench

The Oris Classic features the automatic Oris 733 caliber with indication of hours, minutes, seconds and date. The stainless steel case measures 42mm in diameter with 20mm lugs. The model presents the essential functions of a three-hand watch with date complication.

Frequently asked questions

What is the exact lug width of the Oris Classic 01 733 7594 4091?

The lug width of the 01 733 7594 4091 is 20 millimetres. This measurement refers to the distance between the two horizontal pins that connect the strap to the case. To verify it accurately, use a digital calliper positioned precisely between the internal terminals of the case. It is essential not to confuse this measurement with the width of an already-mounted strap, which may appear slightly different.

Which strap is most suitable for the Oris Classic 01 733 7594 4091?

The Oris Classic 01 733 7594 4091 pairs exceptionally well with straps in full-grain leather subjected to vegetable tanning, which emphasize the Swiss classical character of the watch. Tuscan calf leather in dark brown or cognac offers the finest aesthetic balance between the stainless steel case and the hand-guilloché dial. For alternative solutions, alligator straps maintain formal sophistication, whilst NATO straps in organic cotton enable daily versatility without compromising constructive authenticity.

How do you change the strap on an Oris Classic 01 733 7594 4091?

To change the strap: 1) Position the watch on a soft surface. 2) Locate the horizontal pins (spring bars) at the extremities of the case. 3) Use a dedicated tool (spring bar tool) to gently push the pin from one side and slide out the old strap. 4) Repeat for the other side. 5) Align the new strap and reinsert the pins, ensuring they lock completely. Never force the pins, as they may become damaged. A 20-millimetre lug width strap fits this model perfectly.

Are aftermarket straps compatible with the 01 733 7594 4091?

Yes, all aftermarket straps with a lug width of 20 millimetres are fully compatible with the 01 733 7594 4091. It is essential to verify that the strap's lugs are precisely dimensioned to 20mm to ensure correct housing and mounting security. High-quality artisanal straps, crafted from Tuscan vegetable-tanned leather, alligator, or NATO fabric, offer personalisation opportunities that enhance the character of the Swiss timepiece.

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

A full-grain leather strap subjected to vegetable tanning, such as Tuscan calf leather, has a lifespan of 3–5 years of regular daily use, provided it receives minimal maintenance (periodic cleaning, protection from stagnant water and direct UV exposure). Alligator leather, being denser and more structured, can last up to 7–8 years. Durability varies according to the wearer's habits: constant exposure to perspiration, intense heat or humidity shortens the strap's life. A NATO or vulcanised rubber strap offers superior longevity, as these materials are immune to organic ageing.

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