Oris
Rectangular 01 561 7657 4071-07 5 21 70FC— lug 21mm
Oris Rectangular 01 561 7657 4071-07 5 21 70FC: 21mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 21mm lug width to preserve the original sartorial balance."
Technical Specifications
Oris 01 561 7657 4071-07 5 21 70FCThe essential strap measurement.
Browse 21mm straps →01 561 7657 4071-07 5 21 70FC
Oris caliber Oris 561 Hours, Minutes, Seconds | Date
The Heritage
Compatible Straps
Selected for the 21mm lug width of the Rectangular
FAQ
What is the exact lug width of the Oris Rectangular 01 561 7657 4071-07 5 21 70FC?
The lug width of the Rectangular is precisely 21 millimetres. This technical specification corresponds to the distance between the two lugs (spring bar attachments) on the case. To measure correctly, use a digital calliper or ruler, positioning the tip between the lugs. This tolerance is strict: a strap outside this specification will not be compatible with the case.
Which strap material is most suitable for the Oris Rectangular 01 561 7657 4071-07 5 21 70FC?
The choice depends on intended use. For formal contexts, we recommend cognac brown alligator or vegetable-tanned black calf leather: both emphasise the rectangular case geometry and develop a fascinating patina over time. For daily wear, a grey or navy NATO canvas offers practicality without sacrificing elegance. Satin-finish FKM rubber is ideal for humid environments. Each choice must respect the model's constructive minimalism.
How do I change the strap on the Rectangular 01 561 7657 4071-07 5 21 70FC?
Strap replacement occurs via the lateral spring bars of the case. Use a dedicated spring bar tool to compress the spring mechanisms and slide out the old strap. Position the new spring bars into the holes of the new strap and, using the same tool, ensure the springs lock securely. Verify the attachment by pulling the strap: it should not move. The procedure requires patience but no specialist expertise.
Can I use an aftermarket (non-Oris) strap on this model?
Yes, absolutely. The Rectangular accepts aftermarket straps from any brand as long as the lug width is precisely 21 millimetres. We recommend bespoke artisanal leather straps (alligator, shell cordovan, vegetable-tanned calf) or woven NATO: they guarantee full compatibility and often superior aesthetic personalisation compared to factory solutions. Always verify the 21mm specification before purchase.
How long does a leather strap last on an Oris watch such as the Rectangular?
Durability depends on intensity of use, climate and leather quality. Premium calf or alligator develops a splendid aged patina and lasts 3–5 years under moderate daily use. In humid climates or with intensive use, lifespan reduces to 2–3 years. Vegetable-tanned straps tend to last longer as they improve with time. Canvas NATO resists 5–7 years. FKM rubber has similar longevity to leather but develops less aesthetic evolution. We recommend periodic inspection of the spring bars.