Strap for BelleArti 24.6 Modern Diamond

The lug width of the Longines Heritage L2.504.0.89.2 is 15mm, a rare dimension requiring bespoke strap manufacturing. To verify this measurement, position a digital calliper between the lugs at the point where the strap attaches to the case, excluding the buckle and strap body.

The optimal strap depends on intended wear: black or dark brown alligator suits formal occasions; shell cordovan offers exceptional durability and refined patina development over time; vegetable-tanned calf provides versatility; cotton NATO enables casual wear without aesthetic compromise.

To change the strap, use a spring bar tool to remove the spring bars securing the lugs to the case. Position the tool in the bar's slot, lift gently, and extract. Insert the new strap and reposition the bars using the same procedure, ensuring they are firmly seated.

Yes, any strap with a 15mm lug width is compatible with the L2.504.0.89.2, regardless of aftermarket brand. Verify the strap's technical specifications to confirm the width is exactly 15mm, excluding buckle and deployante.

Lifespan depends on material and usage: alligator or shell cordovan lasts 5-10 years with ordinary care; vegetable-tanned calf has a lifespan of 3-5 years; cotton NATO resists 2-4 years of wear. Regular maintenance—cleaning, drying, conditioning—significantly extends strap life.