Strap for Master Collection Big Date Small Seconds

The lug width of the Longines Master Collection L2.676.4.51.5 is 21 mm. This measurement is taken from the inner shoulder on one side to the inner shoulder on the opposite side, excluding the lug pins. Precision is critical: variations of 0.5 mm result in excessive friction or strap slippage.

For the Master Collection L2.676.4.51.5, American alligator or Nile crocodile leather is recommended for formal contexts, Italian vegetable-tanned calf for natural colour patina development, and equine shell cordovan for maximum durability. For sports versatility, a grey-blue NATO or FKM rubber bracelet maintains high construction quality.

The Master Collection L2.676.4.51.5 uses standard spring bars. Place the watch on a soft surface, locate the small button or hole on the spring bar, push inward and the pin will release from the case. Repeat on the other side. Insert the new pins into your 21 mm strap, align with the case lugs and press until you hear the spring bar click. Avoid hammers: the case metal is resistant but precision is preferable to force.

Yes, provided the lug width is exactly 21 mm. A quality strap (vegetable-tanned alligator, aniline calf, shell cordovan) from a specialised artisan offers superior aesthetics and durability compared to originals. Verify that the buckle or deployant is constructed from 316L stainless steel and stitching thread is synthetic resin or waxed cotton.

Durability depends on material and usage. Alligator or crocodile resist 5-7 years with daily wear; shell cordovan 8-10 years; vegetable-tanned calf 4-6 years. Leather naturally wears in flexion zones; regular care (damp cloths, avoiding prolonged moisture) extends longevity. Artisanal straps can be repaired or regenerated by specialised saddlers.