Strap for Conquest Chronograph Blue Leather

The Longines Conquest L3.662.4.96.0 features a 21mm lug width, a precisely calculated dimension that balances the 41mm case diameter and maintains visual proportion typical of vintage chronograph sports watches. Verify by measuring the internal distance between the two attachment pins.

Alligator leather in natural or patinated finish creates the most sophisticated contrast with satinised steel, tempering the cold geometry of the case. Alternatively, vegetable-tanned calf offers classical elegance and develops a noble patina over time. For pure sports aesthetic, a ballistic NATO offers unmatched versatility.

The Conquest uses a double spring bar mechanism for pin attachment. Using a spring bar tool, gently compress the spring, extract the pin from one side, then the other. Position the new strap, aligning the holes to the 21mm lug width, and reinsert the pins until you hear the locking click.

Yes, provided the strap is specifically sized for 21mm lug width. Many manufacturers omit this dimension, as it remains niche compared to standard 20mm and 22mm offerings. milanostraps.it stocks a dedicated collection of 21mm-compatible straps engineered for the Conquest L3.662.4.96.0.

A quality artisanal leather strap, vegetable-tanned, typically lasts 3–5 years with daily wear, developing visible patina. Alligator or more robust leathers can reach 5–7 years. Vulcanised rubber is virtually indestructible and requires replacement only for aesthetic wear. The 18-month warranty from Casati Milano covers manufacturing defects.