Strap for BC4 Small Second Pointer Day Stainless Steel / Black / Bracelet

The lug width (or lug size) of this model is 22mm. This dimension is the standard for sports and aviator watches of 42mm and above, and it is essential for ensuring compatibility with aftermarket straps. Before purchasing a strap, verify that the spring bars of your case are exactly 22mm wide between the inner shoulders.

The choice depends on intended use and context. For a faithful interpretation of the aviator heritage, we recommend leather with vegetable tanning in Havana Brown, Cognac, or Black tones. For tactical-sports versions, a NATO strap in cordura or woven canvas fabric (greyish, navy blue, or olive green tones) is excellent. In summer, FKM rubber in Black or Anthracite offers lightness and durability. The stainless steel case is neutral enough to accommodate any material, provided the visual proportion remains balanced.

The strap is changed via the spring bars that connect the strap to the case lugs. Using a dedicated tool (strap bar or spring bar tool), press gently on the internal elastic pin to release one end of the strap from its guide. Repeat on the other side. Insert the new strap by first positioning one end in its guide, then press the elastic pin on the other side until the bar clicks into place. If you are uncertain, Milano Straps also offers installation service at the Casati Milano atelier in Milan by appointment.

Yes, provided the strap is specifically manufactured for 22mm lug width and the spring bars of your Oris case are exactly this width. Milano Straps offers 22mm straps in leather, NATO, rubber, and other materials certified for compatibility. All products are tested before shipment and available for online customization.

Longevity depends on the quality of tanning and daily care. A strap in fine vegetable-tanned leather (such as those offered in Tuscan tanning) maintains structural integrity for 5-7 years of regular wear, developing patina and character over time. Constant exposure to moisture, sweat, and UV rays accelerates ageing. To extend strap life, we recommend drying it if wet, avoiding prolonged soaking, and periodically applying a natural protective balm. NATO and rubber straps typically last longer (8-10 years), as they resist environmental factors better.