Strap for Rectangular Date 30 Stainless Steel / Black - Arabic / Bracelet

The lug width of the Oris Rectangular 01 561 7657 4034-07 8 21 82 is 21 millimetres. This dimension is specific to the rectangular Oris model and represents the precise distance between the case terminals where the strap anchors. Always verify this measurement using a digital calliper before purchasing an aftermarket strap to ensure perfect mechanical compatibility.

For the Rectangular, we recommend primarily a vegetable-tanned calf leather strap with medium-fine grain, which enhances the formal elegance of the satin-finished case. Alternatively, shell cordovan offers chromatic stability and natural water resistance over time. A robust NATO textile strap represents the sporty option for a more casual aesthetic whilst maintaining full mechanical compatibility with the 21mm lug width.

The Rectangular uses a standard replacement system via spring bars housed within the case. To change the strap, you require a dedicated tool (spring bar tool or watchmaker's lever) to compress and extract the bars, freeing the old strap. Insert the new 21mm strap by aligning the holes perfectly with the case terminals, then allow the spring bars to reposition naturally. We recommend this operation at an authorised service centre to avoid case damage.

Yes, any aftermarket strap with a 21mm lug width is mechanically compatible with the Rectangular 01 561 7657 4034-07 8 21 82. However, we recommend selecting materials and finishes that respect the stylistic language of the satin-finished rectangular case. Always verify that the spring bars are in perfect condition and that the strap exhibits no construction defects before installation.

The lifespan of a leather strap depends upon usage frequency, tannage and maintenance. Vegetable-tanned calf leather typically lasts 3–4 years with moderate daily wear, thanks to its capacity to develop a protective patina over time. Shell cordovan, being denser, can exceed 5 years of service. Constant exposure to humidity, perspiration and UV rays significantly shortens lifespan. We recommend rotating between straps and periodic cleaning with soft cloths to extend longevity.