Strap for Saint-Imier Chronograph

The lug width of the Longines Saint Imier L2.752.4.73.0 is precisely 20 millimetres. This measurement is fixed and does not vary: any strap must respect exactly 20 mm to ensure perfect fit, secure spring bar retention, and harmonic proportions between the 41 mm case and the wrist.

Alligator is the natural choice for the Saint Imier L2.752.4.73.0: its segmented grain and evolving patina make it ideal for a classic sport watch. Alternatively, vegetable-tanned calf offers softness and silky texture, while a navy blue NATO ensures daily versatility without aesthetic compromise.

The process is straightforward: use a spring bar tool positioned beneath the lug at one of the two ends. Press downward gently to compress the internal spring, then withdraw the pin. Repeat for the second pin. Insert the new pins into the new strap and reposition them in the case slots, ensuring both sides are fully locked.

Yes, any strap with a 20 mm lug width is compatible. Ensure the thickness does not exceed 5 mm to maintain the elegant proportions of the Saint Imier. Verify that the buckle is brushed steel to match the case finish, and that the material (alligator, calf, NATO, rubber) reflects the formal-sporty character of the model.

A quality alligator or calf strap, with proper care, lasts 3–5 years. Longevity depends on use: straps worn daily and exposed to sunlight wear faster; those rotated or protected from UV rays last longer. Patina evolves in the first year, but the structure remains stable if kept dry and clean. After this period, replacement or artisanal restoration becomes necessary.