Strap for Conquest 41 Automatic Ceramic

The lug width of the Longines Conquest L3.657.4.06.7 is 21mm. This dimension represents the internal distance between the lugs and requires straps specifically manufactured to this tolerance. Precision is essential: a 20mm strap will have excessive play, whilst a 22mm strap will not fit correctly.

There is no single "best" strap, but optimal choices depend on use. For formal settings, black or dark brown alligator expresses elegance. For sophisticated daily wear, vegetable-tanned leather ages nobly with the grey ceramic case. For aquatic sportiness, NATO cordura or FKM rubber provide practicality without compromise. Your choice depends on intended use context.

Strap replacement requires a spring bar remover tool. Position the tool between the lug and the pin, gently lifting the small internal hook of the spring bar until it protrudes. Repeat on both sides. We recommend entrusting this operation to a professional watchmaker to avoid damage to the case or pins.

Yes, provided it is manufactured to precise 21mm tolerance. Quality artisanal straps guarantee accurate fit and durability. Always verify that spring bar pins are intact and that the strap has no excessive longitudinal play once installed. Custom straps allow choice of leather, thickness, and stitching thread.

A quality leather strap with vegetable tanning lasts an average of 3–5 years of intensive daily use. Determining variables: climate (humidity accelerates ageing), frequency of water contact, and personal perspiration. Leather patinas; it does not wear out. With proper care and periodic rotation with a second strap, longevity extends significantly. Artisanal straps include 18-month warranty.