Strap for Flagship 38.5 White / Bracelet

The lug width of the Longines Flagship L4.874.4.12.6 is 20 mm. This measurement represents the perpendicular distance between the two fixing pins on the case and determines complete compatibility with replacement straps. To verify, remove the original strap and measure the distance between the pins using a calliper: the result must be exactly 20 mm. This precision is essential to guarantee both security and aesthetic harmony of the pairing.

The ideal strap for the Flagship depends on the context of use and personal preferences. For formal settings, genuine alligator with fine grain enhances the minimalist sophistication of the watch. For refined daily wear, European calf leather with vegetable tanning develops natural patina and character over time. Red burgundy shell cordovan offers exceptional durability and tones that evolve towards dark brown. For summer versatility, reinforced cotton NATO straps in classic tones ensure practicality without compromising formality. High-density synthetic rubber represents the solution for those engaging in light water sports.

To change the strap you need a specialised tool called a spring bar tool. Gently insert the tip of the tool into the slot of the pin, pushing inward to release the spring. Repeat the operation on both sides. Once the old strap has been removed, thread the new strap pin into the case attachment, starting from the upper side, then gently push the lower pin until you hear the fixing click. Ensure the strap is perfectly aligned and both pins are securely fastened.

Yes, aftermarket straps are fully compatible with the Longines Flagship L4.874.4.12.6 provided they strictly respect the 20 mm lug width. On milanostraps.it you will find a curated selection of 20 mm straps specifically designed and tested for complete compatibility with the Flagship. You can choose between different materials (alligator, calf, shell cordovan, NATO, rubber) whilst maintaining the guarantee of secure fastening and aesthetic harmony.

The lifespan of a leather strap depends on the material and frequency of use. A quality alligator or shell cordovan strap, with moderate use and proper maintenance, lasts on average 3-5 years before requiring replacement. Calf leather with vegetable tanning, ageing naturally, can last 2-4 years while maintaining pleasant aesthetics even beyond that period. To extend durability, avoid prolonged contact with water and excessive humidity, protect from direct heat sources, and occasionally clean with a soft slightly damp cloth. Straps crafted by milanostraps.it and the Casati Milano atelier include an 18-month warranty and can be easily replaced whilst preserving the original case.