Strap for X Ace Jewelers Diversity Series Stainless Steel / Blue / Chinese

The lug width of the X13-0804 is 20 mm. This measurement is taken from the inner base of one lug to the other, passing under the case. This specification reflects the carefully calculated proportions of the 40.80 mm case: a 22 mm strap would create an optical incongruity. Always verify this dimension before purchasing an aftermarket strap, as compatibility is essential to prevent mechanical instability.

For the X13-0804, we recommend alligator with vegetable tanning or shell cordovan. Alligator best expresses the watch's minimalist aesthetic philosophy: its natural grain creates a subtle tactile texture, and the patina that develops over time mirrors the ageing of the stainless steel case. Shell cordovan, with its understated sheen and extraordinary durability, represents an alternative rich in historical significance and craftsmanship, ideal for those who value construction awareness.

Strap replacement requires specific tools: a fine-tipped flathead screwdriver or a spring bar tool. Position the watch on a stable surface with the dial facing down. Locate the lugs: these are the metal pins connecting the strap to the case. Insert the spring bar tool underneath the pin from the opposite side to where you wish to remove the strap, applying gentle upward pressure to release the internal spring. Once the pin is freed, the strap slides away easily. Insert the new 20 mm strap by guiding its holes into the lugs and ensuring the pin seats correctly in both holes.

Any strap with a 20 mm lug width is compatible with the X13-0804. On milanostraps.it you will find a comprehensive selection: straps in alligator, calf leather, shell cordovan with vegetable tanning, heavy cotton NATO straps, and Fluorocarbon rubber options. Each strap is available in multiple colour variants and can be customised online before dispatch. Always verify that the seller explicitly specifies the 20 mm lug width to avoid compatibility errors.

The lifespan of a leather strap depends on daily use, tanning quality, and maintenance. A quality artisanal alligator or calf leather strap, subjected to moderate use and properly maintained, typically lasts 4–7 years. Shell cordovan, thanks to its inherent resistance and material density, can exceed 10 years. To extend usable life, avoid prolonged exposure to moisture and direct heat, clean periodically with a slightly damp cloth, and occasionally apply leather-specific conditioners. Natural ageing is desirable: the strap develops a characteristic patina that enhances the watch's aesthetic value over time.