Strap for BC3 Advanced Day Date Stainless Steel / Blue / Fabric

The Oris BC3 in this reference is fitted with a 22-millimetre lug width, measured inside-to-inside between the case lugs. This specification is standard for the 42-millimetre diameter model and ensures compatibility with any aftermarket strap of identical width.

The ideal strap depends on your usage. For authentic tool watch character, we recommend vegetable-tanned leather, thickness 1.3–1.5 mm, with a coarse grain or pull-up finish: these document patina over time and respect the avionic heritage. For humid or operational environments, canvas NATO or vulcanised rubber straps offer durability and practicality.

Position the watch on a soft pad, facing you. Use a spring bar tool (dual-ended removal stick) to gently lift the elastic pin of the lower lug, extract it fully, and remove the old strap. Re-insert the spring bar into the new strap and secure in position with controlled pressure until you hear a click of closure. Verify that the strap is balanced on both sides.

Yes. Provided the strap is 22 millimetres in lug width (measured inside-to-inside), any aftermarket strap will fit perfectly without lateral play. We recommend verification with specialist manufacturers to ensure precise tolerances and sartorial-grade leather or materials.

An artisanal-quality vegetable-tanned leather strap, worn daily, lasts between 3 and 5 years before requiring replacement. Lifespan depends on sun exposure, humidity, frequency of wear, and maintenance (gentle cleaning, annual conditioning). Natural patina increases aesthetic value over time.