Oris
Rectangular 01 561 7657 4074-07 5 21 71FC— lug 21mm
Oris Rectangular 01 561 7657 4074-07 5 21 71FC: 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 4074-07 5 21 71FCThe essential strap measurement.
Browse 21mm straps →01 561 7657 4074-07 5 21 71FC
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 lug width of the Oris Rectangular 01 561 7657 4074-07 5 21 71FC?
The Oris Rectangular 01 561 7657 4074-07 5 21 71FC features a lug width of 21mm. This measurement refers to the internal distance between the two lugs (the attachment points where the strap inserts). A compatible strap must match this exact width to ensure optimal fit without play or stress on the spring bar mechanism.
Which strap is best suited for the Oris Rectangular with 21mm lug width?
For the Rectangular 01 561 7657 4074-07 5 21 71FC, the most appropriate options are: alligator with vegetable tanning (classic choice with graceful ageing), satin-finished black calfskin (pure minimalism matching the case), silk synthetic NATO in light grey (dress versatility), or black FKM rubber (practical daily wear). Your choice should reflect intended usage and desired patina development over time.
How do I change the strap on my Oris Rectangular 21mm?
Strap replacement requires specific tools. Position the watch face-down on a soft pad. Use a spring bar tool to gently press inward on the elastic pin of the lug: this allows you to extract the strap from the lugs. Repeat on the opposite side. To install the new strap, align the holes with the lugs and re-insert the final millimetres of the pin until you hear a click. If uncertain, consult a professional watchmaker.
Can I use an aftermarket strap on my Oris Rectangular 01 561 7657 4074-07 5 21 71FC?
Yes, aftermarket straps are compatible provided they respect the 21mm lug width specification. Milanostraps.it supplies artisanal straps purpose-built for this dimension. Ensure the strap has been manufactured to millimetre precision and that the lug holes properly accommodate the spring bar mechanism. A quality strap enhances both aesthetics and daily usability.
How long does a leather strap last on this watch?
Strap longevity depends on frequency of wear, tanning method, and environmental conditions. An alligator strap with vegetable tanning, worn 4-5 days weekly, maintains structural integrity for 3-4 years whilst developing deeper patina. A calfskin strap typically lasts 2-3 years under the same wear pattern, whilst FKM rubber can exceed 5 years. Factors such as perspiration, humidity, and UV exposure accelerate ageing: rotating between straps extends individual lifespan.