Strap for Endeavour Small Seconds, Rose Gold, Argenté Dial

The lug width of the Endeavour 1321-0100 is precisely 20 millimetres. This measurement represents the distance between the two lugs of the case and corresponds to the space where the strap attachments are secured. For compatibility with aftermarket straps, the lug width must be exactly 20mm. Using a strap of incorrect width would result in poor fit and unstable wear on the wrist.

For an instrument of such aesthetic refinement, the ideal strap is alligator leather with satin finish, preferably in butter or dark brown tones, which amplifies the visual essentiality of the case. An excellent alternative is shell cordovan, which develops a deep patina over time that harmonises beautifully with aged rose gold. For more versatile daily use, a calf leather strap with vegetable tanning or vulcanised rubber offers superior durability whilst maintaining overall elegance. Any choice should be accompanied by a rose gold deployante rather than a simple folding buckle to preserve visual continuity.

Strap replacement requires a dedicated sprung bar tool that allows you to compress the internal springs of the lugs and remove them from the case. Place the watch on a soft cloth surface, then insert the tool into the lateral recess of each lug, gently pushing towards the case centre to compress the spring whilst simultaneously extracting the bar. Repeat for the opposite lug. Install the new strap by reversing this procedure, ensuring the sprung bars seat completely in their housings. For high-value timepieces, it is advisable to entrust this operation to a qualified watchmaker.

Yes, the Endeavour 1321-0100 accepts aftermarket straps of 20mm lug width, ensuring broad compatibility. Milano Straps offers a specialised collection of straps in alligator, calf leather, shell cordovan, NATO, and rubber, all configured for this precise measurement. Before purchase, verify that the strap is explicitly listed for 20mm width. The construction quality of an aftermarket strap can significantly influence the overall aesthetic experience of the watch, so premium materials and finishes coherent with the Swiss timepiece's quality profile are strongly recommended.

The durability of a natural leather strap depends on multiple factors: frequency of use, exposure to moisture and perspiration, leather quality, and finishing treatments applied. Under moderate use conditions, a high-quality alligator or shell cordovan strap retains structural and aesthetic integrity for 3–5 years. Vegetable-tanned leather, whilst generally more robust, may age more rapidly if exposed daily to humid conditions. The emergence of superficial creasing is natural and contributes to the object's patina. A vulcanised rubber or NATO strap offers greater longevity (7–10 years) but requires periodic maintenance to preserve initial appearance.