Strap for Conquest 41 Automatic Ceramic

The lug width of the Longines Conquest L3.657.4.86.6 is 21 millimetres. This specification is essential for this 41-millimetre case and ensures correct visual proportion between case and strap. Any aftermarket strap must be verified to guarantee precise compatibility with this lug width, as even minor deviations would result in poor fit or pressure points on the case.

The ideal strap depends on intended usage. For formal occasions, black alligator leather maintains the elegance of the mother-of-pearl dial. For versatile daily wear, cognac-coloured calf with fine grain offers aesthetic warmth and durability. For humid environments or water sports, FKM rubber strap guarantees superior grip and minimal maintenance. The Casati Milano atelier allows you to explore different leathers and finishes before commissioning your bespoke strap.

Strap changing requires a spring bar removal tool. Gently insert the tool into the slot at the lug termination and lift the spring clip to release the lug pin. Repeat for the opposite lug. Once both lugs are free, slide the new strap through the lug seats until you hear a click, confirming secure seating. If you lack experience, consult a certified watchmaker or contact Casati Milano atelier for safe professional removal.

Any strap with a 21-millimetre lug width is compatible with the Conquest L3.657.4.86.6. At milanostraps.it you will find a comprehensive collection of artisan leather straps (alligator, calf, vegetable-tanned), rubber, and technical fabrics, all available in 21-millimetre width. Each strap can be personalised with initials, choice of stitching colour, and width specifications according to your preferences.

Leather strap longevity depends on tanning quality and usage frequency. A high-quality alligator or calf strap with vegetable tanning typically lasts 3–5 years with moderate daily wear. Moisture, perspiration, and UV exposure accelerate wear. Straps crafted by Casati Milano, made from selected hides and hand-finished, include an 18-month warranty and may be refurbished or replaced. The natural patina developing over time signifies authenticity and character, not deterioration.