Oris
Chronoris 01 673 7739 4034-Set MB— lug 20mm
Oris Chronoris 01 673 7739 4034-Set MB: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Oris 01 673 7739 4034-Set MBThe essential strap measurement.
Browse 20mm straps →01 673 7739 4034-Set MB
Oris caliber Oris 673 Hours, Minutes | Date | Chronograph
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Chronoris
FAQ
What is the lug width of the Oris Chronoris 01 673 7739 4034-Set MB?
The lug width of the Chronoris 01 673 7739 4034-Set MB is 20 millimetres. This measurement refers to the centre-to-centre internal distance between the two fixed lugs of the case. A 20mm strap inserts into this slot without play, ensuring hermetic closure and coherent readability of the watch's geometry.
Which strap is most suitable for the Chronoris 01 673 7739 4034-Set MB?
The most suitable strap depends on intended use: for desk elegance, choose vegetable-tanned alligator in brown; for sport, slate-blue calf or black NATO; for underwater use, FKM rubber with cross-hatching. All must be exactly 20mm for geometric compatibility with the case's fixed lugs.
How do you change the strap on the Chronoris Oris 01 673 7739 4034-Set MB?
The lugs are fixed: they do not feature standard spring bars. Strap replacement requires removal of the keeper via a dedicated strap removal tool, an operation we recommend entrusting to a professional watchmaker. The strap slides from the lugs without requiring invasive tools on the case.
Can I fit an aftermarket strap to this Chronoris?
Yes, provided the strap is exactly 20mm in width. Straps of other dimensions (19mm or 21mm) cause excessive play or insertion difficulty. Milano Straps.it produces only 20mm straps for this model, with guaranteed metric tolerance.
How long does a leather strap last on a Chronoris worn daily?
A vegetable-tanned strap (alligator or shell cordovan) lasts 4–7 years with intensive daily use, thanks to the natural patina that increases tensile resistance. Mass-dyed calf resists 3–5 years. FKM rubber exceeds 10 years without elasticity loss. Longevity depends on ambient temperature, perspiration, and regular maintenance.