Strap for BelleArti 25 Quartz Stainless Steel Black

The lug width of the Longines Heritage L2.501.4.53.3 is 15mm, measured from the inner wall of one lug to the inner wall of the other. This measurement is critical for ensuring compatibility with aftermarket straps. Always verify this dimension before purchasing a replacement strap.

The best strap depends on intended use and aesthetic preference. For classical elegance, we recommend alligator in dark brown or black, or vegetable-tanned calf leather. For daily practicality, modern rubber or calf offer comfort and durability. Shell cordovan is ideal for formal occasions. All these materials are available in 15mm on milanostraps.it.

The strap is replaced by removing the two lateral spring bars that connect the strap to the lugs. Use a dedicated tool to release the bars from their seats, remove the worn strap, and insert the new one, ensuring the bars click into position audibly. If unfamiliar with the procedure, entrust the operation to a qualified watchmaker.

Yes, high-quality aftermarket straps certified for the 15mm lug width exist. milanostraps.it offers a complete collection of straps in alligator, calf, shell cordovan, and rubber, all dimensioned and ready for shipment. Additionally, custom straps can be ordered through the Casati Milano atelier with an 18-month warranty.

The lifespan of a leather strap depends on material, usage frequency, and maintenance. Vegetable-tanned calf typically lasts 3–5 years with regular use; alligator, being more durable, reaches 5–7 years. Shell cordovan, due to its inherent density, easily surpasses 7 years. Periodic maintenance and alternating use with secondary straps significantly extend usable life.