Strap for Master Collection 44 Retrograde Stainless Steel / Silver-Arabic / Bracelet

The Longines Master Collection L2.717.4.78.6 features a lug width of 20mm. This dimension is the standard specification for the 44mm case and is essential for selecting compatible straps and bracelets. The lug width can be verified using a digital calliper, positioned perpendicularly between the two lugs where the strap attaches.

The optimal choice depends on intended use. For formal contexts, alligator leather in vegetable tanning or shell cordovan provide elegance and natural patina development. For versatile daily wear, gummed calf leather in black or dark brown is both practical and refined. For sportive applications, NATO fabric straps or micro-textured rubber offer functionality and reversibility. The stainless steel case pairs exceptionally well with warm-toned leathers (brown, cognac) and cool tones (black, grey, navy blue).

Strap replacement is straightforward and requires no specialised tools. Locate the two lugs on the case (the lateral axles). Use a spring bar tool (thin lever implement) to compress the internal spring mechanism of the pins. Remove the old strap, position the new one by aligning the holes with the lugs, and allow the spring mechanism to close naturally. If inexperienced, professional watchmaker assistance is recommended to prevent case damage.

All straps with a 20mm lug width are compatible with the Longines Master Collection L2.717.4.78.6. Milanostraps offers an extensive collection of artisan straps in this dimension: alligator, cordovan, calf, NATO fabric and natural rubber. It is essential to verify that the strap has exactly 20mm width and that total length suits your wrist (typically 120mm for the upper section and 80mm for the lower).

Lifespan depends on leather type and usage frequency. Alligator or cordovan in vegetable tanning, with proper maintenance, resists 5-8 years in daily use. Gummed calf leather, being more robust, achieves 6-10 years. Natural rubber straps typically last 4-6 years before structural failure. Wearing frequency, exposure to moisture and heat, and regular cleaning significantly influence longevity. Milanostraps guarantees 18 months on bespoke Casati Milano straps and offers restoration services for worn pieces.