Strap for Master Collection 47.5 Small Seconds Stainless Steel / White-Arabic / Alligator

The lug width of the L2.841.4.18.3 is 25mm. This dimension is model-specific and absolutely critical when sourcing compatible aftermarket straps: even a few millimetres error compromises both aesthetics and functionality. Measure the gap between the lug of the case and the inner edge of the original strap to confirm the size before purchasing an aftermarket replacement.

The choice depends on usage context and personal aesthetic preference. For formal-elegant wear, alligator in grey-brown tones amplifies the sophistication of the guilloché dial. For sustained daily use, vegetable-tanned calf offers durability and develops a fascinating patina over time. Shell cordovan represents the perfect compromise between elegance and constructive robustness. Consult the Casati Milano atelier for personalised guidance based on your lifestyle.

The change is performed via the spring bars that link the lugs to the case. Position the watch on a soft surface, use a dedicated tool (spring bar tool) to gently compress the spring, and slide the lug pin out of the slot. Reverse the procedure to install the new strap. If unfamiliar with the process, entrust the operation to a professional: improper execution risks damaging the case lugs.

Yes, provided the width is rigorously 25mm and the lug pins are correctly dimensioned for the stainless steel case. Longines employs standard spring bars, therefore any 25mm strap of adequate constructive quality will prove compatible. Beware of offerings promising lugs at suspiciously low prices: the constructive quality of the strap influences the final perception of the watch.

Longevity varies based on material and usage. A quality artisanal alligator strap with vegetable tanning typically lasts 3-5 years before requiring replacement, developing characteristic patina in the meantime. Shell cordovan extends longevity to 5-7 years thanks to a more robust fibrous structure. Standard calf with industrial tanning lasts 2-3 years. These timeframes extend significantly if the strap is not subjected to excessive moisture and is periodically conditioned with leather-specific creams.