Strap for Master Collection Date 29 Two Tone

The lug width of the Longines Master Collection L2.257.5.38.7 is 15 millimetres. This measurement is the distance between the two lugs of the case, taken perpendicularly to the longitudinal axis of the watch. It is essential to respect this dimension when replacing the strap to ensure correct fitting and secure attachment.

For the Master Collection L2.257.5.38.7, we recommend a medium brown alligator strap or a vegetable-tanned calf leather in cognac tonality. These materials reflect the timeless elegance of the two-tone case and develop a natural patina that enriches over time. For more contemporary use, a NATO-style strap in dark grey fabric offers a versatile and practical alternative.

To replace the strap, you must remove the spring bars that connect the strap to the case lugs. Using a dedicated spring bar tool, position it perpendicularly and apply gentle pressure to release the old strap. Ensure that the width of the new strap is exactly 15 millimetres to guarantee perfect fitting. If uncertain, consult a professional watchmaker.

Yes, the Longines Master Collection L2.257.5.38.7 is fully compatible with quality aftermarket straps made for 15mm lug width. On milanostraps.it you will find a complete selection of artisanal leather, fabric and rubber straps, all customisable in length, initials and thread colour. The Casati Milano atelier also offers the possibility of creating bespoke straps with personalised consultation.

The lifespan of a leather strap depends on the quality of the material, the tanning process, and the level of use. An alligator or vegetable-tanned calf strap can last 3 to 5 years of daily wear before requiring replacement. Natural patination is part of the aesthetic character and testifies to authentic use. Regular maintenance, avoiding prolonged exposure to humidity and direct sunlight, significantly extends the life of the strap.