Strap for Flagship 26 Automatic Stainless Steel MOP Diamond

The lug width of the Longines Flagship L4.274.4.87.6 is 16mm. This dimension is specific to the 26mm case model and is determined by the distance between the case lugs measured centre-to-centre. It is important to verify this measurement with millimetre precision before purchasing an aftermarket strap to avoid incompatibility.

For the Flagship L4.274.4.87.6, straps in quality alligator with vegetable tanning, dark smooth calf leather, or silk-doubled NATO are recommended. Alligator maintains the aesthetic sobriety of the case whilst developing a natural patina over time, whilst calf leather offers versatility. NATO straps allow casual-elegant versatility without burdening the delicate proportions of the piece.

To change the strap of the Flagship L4.274.4.87.6, use a spring bar tool: insert the lever into the pin slot, lift slightly to compress the internal spring, then extract the pin from the case. Repeat for both pins. When fitting the new strap, insert the pins into the lugs and ensure the spring returns to position with a secure click. A straightforward operation, but one requiring delicacy given the compact proportions of the case.

Yes, the Flagship L4.274.4.87.6 is fully compatible with 16mm aftermarket straps. However, the 16mm size is less common in the market compared to 14mm, 18mm or 20mm, so availability should be verified with specialist suppliers. Personalised artisanal straps ensure perfect compatibility and construction quality appropriate to the value of the watch.

The lifespan of a leather strap depends on the material and use: vegetable-tanned alligator or calf leather maintains structural integrity for 3-5 years in daily wear, developing a natural patina over time. Synthetic leathers have shorter lifespans (1-2 years). Replacement is recommended when the material shows wear at the edges, cracks or loss of elasticity. Correct 16mm lug measurement prevents accelerated wear on the pins.