Strap for Spirit Zulu Time 42 Stainless Steel / Black - Blue / Bracelet

The lug width of the Longines Spirit L3.812.4.60.6 is precisely 22mm. This measurement represents the distance between the two lugs of the case where the strap attaches. To verify accuracy, use a digital calliper with the watch case facing upwards and measure the net distance between the inner edges of both lugs. Acceptable values fall between 21.9mm and 22.1mm to guarantee perfect fit without excessive play or tension.

The ideal strap depends upon intended use and aesthetic preference. For formal contexts, genuine alligator with uniform natural texture represents the supreme choice, amplifying the avionic character of the dial. For daily versatility, Tuscan leather with vegetable tanning in cognac creates warm resonance that elegantly contrasts the sunburst dial. For those seeking sophisticated ageing over time, Japanese shell cordovan develops a multilayered patina across years. Natural rubber or technical canvas straps maintain the tool-watch character for dynamic and recreational use.

Strap replacement requires a spring bar remover tool to compress the internal elastics (spring bars) that secure the strap to the lugs. Position the watch with one case side facing you, insert the thin blade of the spring bar remover into the gap between strap and lug, gently press to compress the elastic, then extract the strap. Repeat from the opposite side. For installation of the new strap, align the lugs with the case, compress the spring bars manually, and secure the strap. If uncertain, consult a professional watchmaker.

Yes. Milano Straps offers a comprehensive collection of 22mm straps compatible with the Longines Spirit L3.812.4.60.6, available ready for dispatch in multiple finishes: alligator, Tuscan leather, vegetable-tanned calf, shell cordovan, natural rubber, and technical canvas. Each strap is customisable in length dimensions, stitching thread, and initials. For an even more personalised experience, the Casati Milano atelier creates bespoke straps with personal pelt selection and 18-month guarantee.

The lifespan of a leather strap depends upon leather type, intensity of use, and maintenance practices. Vegetable-tanned leathers such as Tuscan maintain elasticity and resistance for 4–6 years of moderate daily wear, whilst developing natural patina over time. Japanese shell cordovan, owing to its density and structure, may endure 7–10 years under equivalent use. European calf straps require greater caution around moisture exposure and typically last 3–5 years. To extend strap longevity, avoid prolonged water exposure, occasionally apply natural protective balm, and rotate between multiple straps to facilitate drying.