Oris · Chronoris

Strap for Chronoris Date / Black / Brown 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 4054-07 5 19 45
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 4054-07 5 19 45

Selected for the 19 mm lug width

All 19 mm straps →

The Chronoris 01 733 7737 4054-07 5 19 45, seen from the bench

The Chronoris features the automatic Oris 733 caliber with hour, minute, second and date indications. The case houses 19mm lugs for the strap. The movement offers the essential functions in a three-hand configuration with date.

Frequently asked questions

What is the lug width of the Oris Chronoris 01 733 7737 4054-07 5 19 45?

The lug width is 19mm, a specific dimension for this model. This measurement represents the distance between the attachment pins (spring bars), measured from the inside of one lug to the inside of the other. This non-standard width requires dedicated watch straps, incompatible with the more common 18mm or 20mm standards. Always verify this measurement with callipers before purchasing an aftermarket strap.

Which strap is best for the Oris Chronoris 01 733 7737 4054-07 5 19 45?

Your choice depends on usage and personal preference. For daily elegance, we recommend vegetable-tanned leather in natural or burgundy tones, which develops a rich patina over time. For sporting activities, a grey-dark nylon NATO strap offers both durability and sober aesthetics. If you frequently swim or use water facilities, FKM rubber is preferable: it resists chlorine and maintains flexibility. A steel deployante clasp significantly improves overall wrist comfort.

How do I change the strap on the Oris Chronoris 01 733 7737 4054-07 5 19 45?

Remove the case from the current strap using a springbar tool: insert the tip under the spring bar and lift gently until it yields. Carefully note the small internal spring—do not lose it. Insert the new 19mm strap into the attachment holes, repositioning the spring bar with a smooth motion. Verify that the spring bar is properly secured by checking that the strap does not move relative to the case.

Are there compatible aftermarket straps for the Oris Chronoris 01 733 7737 4054-07 5 19 45?

Yes, MilanoStraps offers a comprehensive collection of handcrafted 19mm straps: full-grain Italian leather, premium nylon NATO straps, and FKM rubber for sports. Each strap is individually crafted and can be personalised (colour, clasp type, finishing). We guarantee total compatibility with your Chronoris lugs and offer rapid dispatch.

How long does a leather strap last on a watch like the Oris Chronoris 01 733 7737 4054-07 5 19 45?

A full-grain leather strap with vegetable tanning typically lasts 4–7 years with moderate daily wear. Longevity depends on water exposure (avoid immersion), perspiration, direct sunlight, and tanning quality. A vegetable-tanned strap improves with age, developing character and patina. If you wear the watch during frequent water sports, reduce leather strap exposure or replace it with FKM rubber.

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.

Request an appointment →

Casati Milano · Via XX Settembre 15, Milan · by appointment only