Oris · Chronoris

Strap for Chronoris Date / Grey / Black Leather

Takes 19 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width19 mm
Case diameter39 mm
Reference01 733 7737 4053-07 5 19 44
FamilyChronoris
MovementOris caliber Oris 733 hours, minutes, seconds | date
Year2017
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 Chronoris 01 733 7737 4053-07 5 19 44

Selected for the 19 mm lug width

All 19 mm straps →

The Chronoris 01 733 7737 4053-07 5 19 44, seen from the bench

The Chronoris represents the modern reinterpretation of an Oris chronograph from the 1970s. It is equipped with the Oris 733 caliber with hour, minute, second and date functions. The lugs measure 19mm in width.

Frequently asked questions

What is the lug width of the Oris Chronoris 01 733 7737 4053-07 5 19 44?

The lug width is 19mm, representing the exact distance between the two lugs of the case. It is essential to verify that the selected strap corresponds to this dimension to ensure correct fitting without lateral protrusions or excessive play.

Which strap is recommended for the Chronoris?

An alligator strap in brown or cognac is the most refined stylistic choice for the Chronoris 01 733 7737 4053-07 5 19 44, as its regular texture dialogues perfectly with the squared lines of the case. A calf leather with vegetable tanning in black represents a versatile and formal alternative, while NATO straps in cordura offer sporting practicality without aesthetic compromise.

How do I change the strap on this watch?

Remove the spring bar from the lugs using a dedicated spring bar tool or appropriate implement, working with precision to avoid scratching the case. Position the new spring bar in the new strap, reinsert the bar into one of the lugs, compress the strap slightly and secure the other end of the bar. Verify that the strap is firmly seated before wearing the watch.

Is an aftermarket 19mm strap truly compatible with the 01 733 7737 4053-07 5 19 44?

Yes, any certified 19mm strap is compatible from a constructive standpoint. However, the quality of finishing, spring bar rigidity and measurement precision can vary. We recommend artisanal straps that guarantee tight tolerances and premium materials, avoiding mass production where ±0.5mm errors are common.

How long does a leather strap last on this watch?

A calf leather strap with vegetable tanning typically lasts 3-5 years with daily use, developing a fascinating patina over time. Alligator, being more resistant to tearing, can last 6-8 years. Durability depends on ambient humidity, sun exposure and cleaning frequency. Cordura NATO straps exceed 10 years, synthetic rubber 5-7 years.

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