Strap for Flagship 40 Stainless Steel - Yellow Gold / White - Diamond / Bracelet

The lug width of the Longines Flagship L4.984.3.27.7 is 21mm. This is a specific dimension, not a standard size between the industrial 20mm and 22mm, which requires custom-cut straps to ensure a perfect fit between the case lugs and the strap passant.

Dark brown alligator is the classic choice for the Flagship, as it amplifies the dial's understated elegance. Other excellent options include vegetable-tanned calf for smooth daily wear, or FKM rubber for sporty versatility. Your choice depends on personal style and intended use.

Use a spring bar tool to gently lift the lug terminals. Insert the tool tip into the small hole on the spring lug, then rotate slightly to release the pin. Remove the old strap and insert the new one, ensuring the pin aligns perfectly before closing.

Yes, provided the strap has the exact 21mm lug width. Artisanal aftermarket straps, such as those from milanostraps.it, offer superior quality compared to Longines originals, with personalised leather selection, hand stitching and stainless steel deployante. Compatibility is guaranteed when the measurement respects 21mm.

A quality leather strap (alligator, calf, shell cordovan) typically lasts 3-5 years with daily wear, but can reach 7-10 years with moderate use and proper maintenance. Sun exposure, sweat and humidity accelerate wear. An FKM rubber or cordura strap lasts 5-8 years under normal conditions. Casati Milano's 18-month warranty covers manufacturing defects.