Strap for Flagship 38.5 White

The lug width of the Longines Flagship L4.874.4.12.2 is 20 mm. This measurement represents the distance between the outer bases of the two lugs and is the fundamental parameter for selecting a compatible strap. A strap with a width different from 20 mm will not fit the case correctly.

For the Longines Flagship L4.874.4.12.2, we recommend alligator straps with vegetable tanning for timeless elegance, shell cordovan for structural integrity and rich patina development, or vegetable-tanned calf for softness and gradual ageing. Technical options—FKM rubber or NATO—are ideal if you wish to emphasise the instrumental character of the watch. The choice depends on intended use and desired aesthetic context.

To change the strap, use a spring bar tool (included or available online). Insert the thin tip into the hole at the base of the lug, apply gentle downward pressure to compress the internal spring, then remove the old strap. Repeat on the opposite side. Insert the new strap by aligning the lug holes with the spring bars and press until you hear a click indicating proper engagement.

Yes, the Longines Flagship L4.874.4.12.2 uses standard 20 mm spring bars, which are compatible with aftermarket straps. Custom-crafted straps offer greater flexibility in terms of material, colour, and finish compared to original straps. Milano Straps provides a wide range of personalizable 20 mm straps for this model.

The durability of a leather strap depends on the material and usage patterns. An alligator strap with vegetable tanning maintains structural integrity for 3-5 years with daily wear; shell cordovan lasts longer due to its natural density. Exposure to water, excessive humidity, and direct sunlight accelerates ageing. Milano Straps' straps include an 18-month warranty and can be replaced or restored at the Casati Milano atelier.