Strap for Master Collection Worldtime Silver

The lug width of the Longines Master Collection L2.631.4.70.3 is 20 mm. This dimension is specific to this model and requires straps manufactured with millimetre precision. The measurement should be verified by placing a digital calliper on the inner part of the lug, the section that enters the case attachments.

Natural alligator with vegetable tanning represents the most congenial choice for the Master Collection character: the texture of the scales dialogues harmoniously with the brushed finish of the stainless steel case. Alternatively, European calf in smooth grain offers sober formal elegance, whilst shell cordovan with polished edge combines refinement with resistance to daily wear.

Strap replacement requires extraction of the pins from the lugs. Position the tube of a spring bar tool against the pin on the dial side, then gently pull towards you. Extract the pin completely and repeat on the opposite side. Insert the new strap by aligning the holes to the lugs and reinert the pins with precision. Do not use improvised tools to avoid damaging the case attachments.

Yes, any strap constructed with 20 mm lugs is compatible with the L2.631.4.70.3. It is essential to verify that the lug width is exactly 20 mm: straps of different dimensions (18 mm, 22 mm) will not install correctly and risk damaging the case attachments.

The lifespan of a leather strap depends on the quality of the tanning and daily use. A high-quality alligator or European calf resists an average of 5-7 years of regular use. Vegetable-tanned alligator develops a luminous patina that increases aesthetic appeal with ageing. The most rapid wear occurs near the buckle due to constant friction.