Strap for Chyros Klassik - Black leather (Croco)

The lug width of the Limes Chyros U6017-LA3.3 is 20 mm. This dimension is measured perpendicularly between the two attachment points of the case, excluding the curved shoulders. A compatible strap must present an internal width of 20 mm to guarantee precise fit and balanced tension distribution on the wrist.

The ideal strap depends on intended use and personal preference. For formal and daily contexts, we recommend alligator leather with vegetable tanning in cognac or dark brown tones, which amplifies the geometry of the satin case. For sporting or aquatic environments, vulcanised FKM rubber guarantees dimensional stability and chemical resistance. Technical NATO straps represent a versatile and modern alternative for those preferring an informal aesthetic.

Changing the strap requires use of a spring bar tool—a specialised instrument that allows compression of the strap retention pins (spring bar) without damaging the case. Position the tool perpendicularly to the pin, gently compress until the strap end releases, then repeat on the opposite side. The operation requires precision and patience; we recommend having a professional watchmaker perform it if you lack experience.

Yes. The Chyros U6017-LA3.3 accepts any strap with a 20 mm lug width, provided the internal width is compliant and the spring bars are correctly dimensioned. Our bespoke straps are produced specifically for this compatibility and subjected to rigorous quality control. We recommend straps from specialised suppliers to avoid substandard manufacturing tolerances that could generate play or accelerated wear.

The lifespan of a leather strap depends on construction quality, tanning type, and conditions of use. A full-grain leather strap with vegetable tanning, worn regularly (5-6 days weekly) in dry environments, maintains structural integrity for 2-4 years before requiring replacement. Frequent exposure to water, perspiration, or thermal variations accelerates ageing. Natural patina develops over time; dark spots are signs of patina, not deterioration. Regular maintenance (gentle cleaning, air-drying) substantially extends operational life.