Oris · Classic

Strap for Classic Date 42 Stainless Steel / Mint Green / 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 7719 4017-07 8 20 10
FamilyClassic
MovementOris caliber Oris 733 hours, minutes, seconds | date
Year2024
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 7719 4017-07 8 20 10

Selected for the 20 mm lug width

All 20 mm straps →

The Classic 01 733 7719 4017-07 8 20 10, seen from the bench

The Oris Classic 01 733 7719 4017-07 8 20 10 exemplifies Swiss watchmaking philosophy: rigorous elegance without technical compromise. The 42mm stainless steel case maintains classical proportions and pairs with the Oris caliber 733 automatic movement. The 20mm lug width ensures harmonious proportions on the 42mm case. Water resistance reaches 100 meters for daily use and light immersion. The case accepts strap thickness between 3–4mm, offering construction versatility.

Frequently asked questions

What is the lug width of the Oris Classic 01 733 7719 4017-07 8 20 10?

The lug width is 20mm. This is the distance between the inner edges of the lugs that protrude from the case. Any aftermarket strap must respect this measurement to ensure perfect mechanical and aesthetic compatibility. Always measure with a digital calliper positioned parallel to the case, between the two opposite lugs.

Which strap material is recommended for the Oris Classic 01 733 7719 4017-07 8 20 10?

It depends on usage. For visible patina and vintage character, vegetable-tanned Tuscan leather (4mm thickness). For discrete luxury and extreme durability (20+ years), shell cordovan. For formal elegance, South American alligator or pressed calf leather. For daily wear with perspiration, 1000d polyamide NATO or grey FKM rubber. The ideal strap pairs the silver-grey dial with deep chocolate brown or black tones.

How do you change the strap on this Oris watch?

Obtain a strap change kit (spring bar tool). Place the watch on a soft surface. Position the tool's tip in the small lateral slot of the spring bar that secures the strap to the lug. Press gently downward: the spring retracts. Remove the old strap. Insert the new strap aligning the holes with the lugs. Repeat for both sides. Verify that the strap is securely fastened before wearing the watch.

Can I use non-Oris aftermarket straps compatible with the 01 733 7719 4017-07 8 20 10?

Yes, provided they strictly respect the 20mm lug width. Brands such as Milano Straps, Barenia, Hirsch, and Colareb manufacture artisanal 20mm straps with build quality equal to or superior to genuine Oris straps. Always verify body thickness (3-4mm) and length: the strap should cover 60-70% of the wrist. Generic e-commerce straps without quality control are not recommended.

What is the lifespan of a leather strap for the Oris Classic?

This varies by material. Vegetable-tanned Tuscan leather: 4-6 years with daily use, depending on perspiration and humidity. Shell cordovan: 15-25 years without deterioration, simply polished annually. Alligator/crocodile: 8-12 years if protected from excessive water. Calf: 3-5 years on heavily perspiring hands. Extend lifespan by rotating straps (every 2-3 months), drying with a soft cloth after perspiration contact, storing in a dry location at room temperature.

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