Oris · Artelier

Strap for Artelier Chronometer Date 40 Stainless Steel / Silver

Takes 21 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width21 mm
Case diameter40 mm
Reference01 737 7721 4031-07 5 21 33FC
FamilyArtelier
MovementOris caliber Oris 737 hours, minutes, seconds | date | chronometer
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 Artelier 01 737 7721 4031-07 5 21 33FC

Selected for the 21 mm lug width · workshop selection

All 21 mm straps →

The Artelier 01 737 7721 4031-07 5 21 33FC, seen from the bench

The Oris Artelier Chronometer Date 40 Stainless Steel / Silver model 01 737 7721 4031-07 5 21 33FC features a 40mm stainless steel case with a guilloché silver dial and transparent sapphire caseback. Powered by the Oris Caliber 737 certified chronometer movement with date and central seconds, entirely produced in-house at Hölstein facilities. The 21mm lug width is specifically calibrated for this case diameter to ensure proper proportions and comfort on the wrist.

Frequently asked questions

What is the lug width of the Oris Artelier 01 737 7721 4031-07 5 21 33FC?

The Oris Artelier 01 737 7721 4031-07 5 21 33FC features a 21-millimetre lug width. This dimension is specified in the reference number itself and is proportioned to the 40mm case diameter, ensuring visual harmony and wrist comfort. Always verify compatibility by measuring the distance between the lugs with a digital calliper before ordering a replacement strap.

What strap material is recommended for the Artelier 01 737 7721 4031-07 5 21 33FC?

For this stainless steel model, we recommend a vegetable-tanned leather strap in cognac or medium brown, which complements the case's neutral tonality. Alternatively, shell cordovan (horse leather) offers superior longevity and develops a beautiful patina over time. For formal elegance, a crocodile or alligator strap in grey or black delivers sophistication. For sport-oriented wear, a NATO strap in navy or charcoal cotton maintains the watch's formal character without compromising functionality.

How do I change the strap on an Oris Artelier with 21mm lugs?

Position the watch on a soft cushion with the case facing downwards. Use a spring bar tool to slide the elastic spring that connects the strap to the lugs. Insert the flat screwdriver end of the tool between the lug and spring, pressing lightly to release the spring from one side. Repeat on the opposite side to fully remove the strap. For installation, align the new strap's holes with the lugs and reinsert the spring, maintaining balanced tension. If unsure, consult a professional watchmaker.

Can I use an aftermarket quality strap on this Oris model?

Yes, a quality aftermarket strap is fully compatible provided it features a 21mm lug width. We recommend brands utilising certified vegetable-tanned leather or shell cordovan, ensuring the strap's longevity matches the watch's construction. Artisanal full-grain leather straps develop a natural patina that enhances the Artelier's classical aesthetic far better than mass-produced industrial straps. Always verify the tab width (width of the strap lugs) to ensure they fit the watch's lugs without play.

How long does a leather strap last on an Oris Artelier 21mm?

Lifespan depends on material and usage patterns. A vegetable-tanned leather strap, with periodic maintenance (gentle cleaning and annual conditioning), lasts 5–7 years under daily wear. Shell cordovan resists for 7–10 years thanks to the natural durability of horse hair fibres, which are more moisture-resistant. A crocodile or alligator strap exceeds 10 years if not exposed to constant abrasive dirt. To extend lifespan, use a steel spring bar or deployante buckle, which reduces mechanical stress on the lug holes, preventing premature tears. Avoid prolonged immersion in water and remove the strap during sleep to allow natural air-drying.

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