Longines
Master Collection L2.357.4.87.2— lug 18mm

The Longines Master Collection L2.357.4.87.2 features 18-millimetre lugs. This width is standard for mid-sized dress watches and maintains visual harmony with the 34mm case. When purchasing a strap, confirm the lug width is precisely 18mm to prevent excessive play or rubbing against the case shoulders.

Satin-finished black alligator remains the quintessential formal choice. For greater versatility, vegetable-tanned calf leather in medium brown or Swift calf in midnight blue offer balance between elegance and daily practicality. Avoid sporty rubber or synthetic straps: the dress watch character of the Master Collection demands noble materials.

Position the watch on a soft pad. Using a spring bar tool, gently release the elastic pin of the lower lug by leveraging upward. The pin will slide free, releasing the old strap. Insert the new strap, aligning the holes with the pins, insert the elastic pin into the lower position, and secure it firmly, verifying that it is properly fixed.

Yes, provided the lug width is precisely 18mm. Quality artisanal aftermarket straps often offer superior finishing and materials compared to originals. Verify that the manufacturer explicitly specifies 18mm lug compatibility and provides length measurements to adjust the strap to your wrist.

Lifespan depends on leather type and usage. High-quality satin alligator resists 5-7 years with proper care (protection from excessive moisture, drying after rain). Vegetable-tanned calf lasts approximately 4-5 years, as natural fibres thin with wear. Shell cordovan is the most durable, reaching 8-10 years. These are typical lifespans; a well-maintained strap exposed to minimal elements lasts considerably longer.