Oris
Chronoris 01 673 7739 4034-Set LS— lug 20mm
Oris Chronoris 01 673 7739 4034-Set LS: 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 LSThe essential strap measurement.
Browse 20mm straps →01 673 7739 4034-Set LS
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 LS?
The lug width of the Oris Chronoris 01 673 7739 4034-Set LS is 20 millimetres. This dimension is measured between the internal fixing pins of the case. The 20-millimetre measurement is standard for 40-millimetre diameter chronographs and is proportionally balanced to ensure visual harmony between the case diameter and the strap.
Which strap is recommended for the Oris Chronoris 01 673 7739 4034-Set LS?
For the Chronoris 01 673 7739 4034-Set LS in stainless steel, three solutions are recommended: high-quality alligator with fine grain for formality, vegetable-tanned calf leather for elegance that develops patina over time, or a NATO strap in premium canvas for sporting functionality. Each choice must respect the 20-millimetre lug width and reflect the functional austerity of the original design.
How do you change the strap on the Chronoris 01 673 7739 4034-Set LS?
Changing the strap requires extraction of the fixing pins (spring bars) from the lugs. Use a watch-specific tool, inserting the blade into the lateral hole of the pin to compress the internal spring, extract it gently from the first lug, then repeat on the other side. Once the lugs are free, insert the pins into the new strap (compatible with 20 millimetres) and reinsert them into the lugs, snapping the pins into position until you hear an audible click.
Which aftermarket strap is compatible with the Oris Chronoris 01 673 7739 4034-Set LS?
Any artisanal strap with a 20-millimetre lug width is compatible with the Chronoris 01 673 7739 4034-Set LS. The best aftermarket options include alligator, shell cordovan, vegetable-tanned calf leather, canvas NATO, or rubber straps. Always verify that the pins (spring bars) are appropriate for a 20-millimetre width and that the total strap length is not less than 75 millimetres of developed length.
How long does a leather strap last on the Chronoris 01 673 7739 4034-Set LS?
The lifespan of a leather strap depends on the type of tanning and usage. Vegetable-tanned calf leather, properly maintained, lasts between 18 and 36 months of daily wear. Alligator, being a denser vegetable leather, can last up to 48 months. Rubber, conversely, has greater durability (over 60 months) but loses elasticity more rapidly. The patina and natural creases that develop are not defects, but signs of authentic ageing.