Technical Archive

Oris
Chronoris 01 733 7737 4034-Set LS— lug 19mm

Oris Chronoris 01 733 7737 4034-Set LS: 19mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Chronoris Date / Movember / Calf

Artisanal Note

"This model requires a precise 19mm lug width to preserve the original sartorial balance."

Technical Specifications

Oris 01 733 7737 4034-Set LS
Lug Width
19 mm

The essential strap measurement.

Browse 19mm straps →
Reference

01 733 7737 4034-Set LS

Movement

Oris caliber Oris 733 Hours, Minutes, Seconds | Date

The Heritage

The Chronoris represents the contemporary reinterpretation of an Oris model from the 1970s. It features the automatic Oris 733 caliber with indication of hours, minutes, seconds and date. The case has 19mm lugs and maintains the typical proportions of the reference era.

FAQ

What is the lug width of the Chronoris 01 733 7737 4034-Set LS?

The Chronoris 01 733 7737 4034-Set LS features a 19mm lug width. This measurement represents the distance between the lateral case lugs and is essential for ensuring compatibility with aftermarket straps. When purchasing a replacement strap, ensure it is specifically engineered for this width.

What is the best strap for the Oris Chronoris?

Selection depends on dial colour and intended use. For dark dials, satin-finished alligator communicates elegant transition. Brown cognac shell cordovan is a versatile option that ages magnificently. Tactical NATO straps remain ideal for aquatic environments or intense activity. Vulcanised FKM rubber guarantees wear resistance and broad thermal tolerance.

How do I change the strap on the Chronoris?

Strap replacement requires precision tooling (spring bar tool). Locate the two metal pins traversing the lateral case lugs. Using the tool, compress the pin by pushing towards the case body until the internal spring is visible. At this point, the pin retracts and the strap disengages. To mount the new strap, position the pin onto the new strap's passants, then reinsert into the lateral case holes until the stop click.

Can I fit aftermarket straps to the Chronoris 01 733 7737 4034-Set LS?

Yes, completely compatible. Any strap in 19mm width will adapt to the lateral case passants. Milano Straps offers a specialised selection in artisan leather, alligator, and synthetic materials for your Chronoris, all tested on this specific lug width.

How long does a leather strap last on a chronograph like the Chronoris?

A quality leather strap (alligator, shell cordovan, vegetable-tanned calf) on a sports watch like the Chronoris maintains structural integrity between 3-5 years with regular wear. Durability depends on frequency of wear, humidity exposure, and periodic maintenance. Vegetable-tanned straps visibly age but do not deteriorate rapidly; shell cordovan patinas magnificently. FKM rubber offers superior longevity, often 5-7 years, if exposed to moderate thermal cycles.