Strap for Master Collection 40 Date Stainless Steel / Silver-Roman / Alligator / DFS

The lug width of the Longines Master Collection L2.793.4.98.6 is precisely 21mm. This measurement is obtained by measuring the internal distance between the two lugs perpendicularly, excluding the external protrusions of the case. This is a specific dimension for this model and should not be confused with the 20mm or 22mm found on adjacent models. Precision is essential to ensure proper strap attachment to the spring bars without oscillation or compression.

For a timepiece of this material importance (rose gold) and constructive quality, alligator represents the traditionally most appropriate choice. In black or dark brown with vegetable tanning, it creates an elegant visual contrast without competing with the case. Shell cordovan is the alternative for those seeking finer grain and compact appearance with polished lustre. For daily versatility, vegetable-tanned calf in cognac, tobacco, or honey tones offers initial softness and excellent wrist adaptation. The ideal combination is to own at least two straps: one in alligator for formal occasions and one in calf for frequent use.

The strap is replaced by gently removing the spring bars (the small metal pins that secure the strap to the lugs). Using a dedicated tool (spring bar tool) or alternatively a thin non-cutting blade, pressure is applied to the release point of the spring bar to make it disengage. Once extracted, the old strap separates easily. The new strap, with its pre-drilled holes, is positioned on the pins and the spring bar is reinserted and clicked into position. The operation requires care to avoid scratching the rose gold case. If uncertain, the intervention should always be delegated to a professional watchmaker.

Absolutely yes. A quality aftermarket strap, provided it is precisely manufactured with a 21mm lug width, is entirely compatible. The watch enthusiast community has developed a rich market of artisanal and manufacturing alternatives that often exceed the OEM strap in material quality and finishing. Straps in alligator with vegetable tanning, shell cordovan, or vegetable-tanned calf from specialised manufacturers represent significant upgrades, offering greater colour flexibility, superior ageing characteristics, and customisation options (initials, thread colour, length adjusted to your wrist).

The lifespan of a natural leather strap depends on intensity of use, tanning quality, and environmental conditions. With vegetable tanning and noble materials such as alligator or shell cordovan, useful life ranges from 4 to 7 years in moderate daily use, with the possibility of extension to 10-15 years in occasional use. Leather ages naturally, developing a fascinating patina that makes the piece more characterful. Proper maintenance (protection from excessive moisture and heat, possible treatment with natural waxes) extends strap life. Many collectors consider this controlled degradation part of the intrinsic beauty of natural leather, transforming periodic replacement into an opportunity to vary the appearance of their timepiece.