Strap for Conquest Quartz 25 Ceramic

The Longines Conquest L3.157.4.87.2 features a lug width of 12mm, a specific measurement reflecting the compact proportions of its 25mm case. This dimension is narrower than the most common standards (16mm, 18mm, 20mm) and is characteristic of high-end ladies' and compact sports watches. Measurement must be taken internally, from inner edge to inner edge, to ensure aftermarket strap compatibility.

The best strap depends on intended use and personal preference. For everyday elegance, black or brown alligator leather offers harmonious proportions without visual excess. Vegetable-tanned calf provides softness and develops a beautiful patina over time. For a sportier aesthetic, natural rubber maintains lightness. Shell cordovan represents the ultimate choice for those who appreciate material evolution. The ceramic and steel case naturally pairs with straps that respect this watch's delicate proportions.

Strap replacement occurs through the lateral lugs on the case. Using a dedicated tool (spare pin or spring bar tool), apply inward pressure on the small lug spring to release it from the fixing pin. Once the pin is extracted, the old strap can be removed and the new one inserted, ensuring perfect alignment. The procedure requires care to avoid scratching the case. If inexperienced, consult a professional. The 12mm lug width requires specifically compatible straps.

Yes, quality aftermarket straps with 12mm lug width are available. Milano Straps offers an online collection of 12mm straps ready for shipment, customisable in material, length, initials, and stitching thread colour. The Casati Milano atelier additionally offers bespoke straps, handcrafted during a personal consultation, with direct leather selection and an 18-month guarantee.

The lifespan of a leather strap varies according to material and usage. Quality alligator, worn regularly and properly maintained, may last 3-5 years before showing wear at the extremities. Shell cordovan, being denser, can last 5-7 years or longer, developing a fascinating patina. Vegetable-tanned calf tends to be more delicate and benefits from rotation with other straps to extend life. Regular maintenance—cleaning with a damp cloth, avoiding prolonged sun exposure—significantly extends durability. The 18-month guarantee from Casati Milano provides protection against manufacturing defects.