Strap for Saint-Imier Chronograph

The lug width of the Longines Saint-Imier L2.752.4.53.3 is 20 millimetres. This specific dimension ensures optical alignment with the 41mm case. You can verify compatibility by measuring the distance between the lugs where the strap attaches to the case using a digital calliper.

The Saint-Imier L2.752.4.53.3 pairs excellently with alligator in dark shades, vegetable-tanned calf leather, shell cordovan, or natural rubber. Your choice depends on intended use: alligator for formal occasions, calf for everyday versatility, rubber for technical sportiness. A satin-finish steel deployant buckle completes the aesthetic without compromise.

To change the strap, use a spring bar tool or dedicated pin extractor. Place the watch on a soft surface, locate the lateral pins (typically positioned vertically), and gently push to extract them. Once removed, the strap will detach. Insert the new 20mm strap and carefully reinsert the pins to avoid scratching the case.

Any strap with a 20mm lug width is compatible with the Saint-Imier L2.752.4.53.3, provided total length is appropriate (typically 240–280mm). We recommend straps from specialised manufacturers offering certified leather quality, precise finishing, and construction guarantees. Verify that spring bars are compatible (standard diameter).

Leather strap longevity depends on construction quality, tanning method, and use intensity. An alligator or shell cordovan strap with vegetable tanning may last 3–5 years in moderate daily wear. Calf leather has comparable lifespan. Humidity, sun exposure, and mechanical stress (repeated flexing) accelerate ageing. Regular maintenance—soft cleaning and protection from liquids—extends strap life.