Strap for Saint-Imier Chronograph

The lug width of the Longines Saint Imier L2.752.4.73.6 is 20mm. This is the distance between the spring bar pins at the 12 o'clock and 6 o'clock positions on the case. Any standard 20mm strap will fit correctly into the lug slots of this chronograph.

The ideal strap depends on your intended use. For formal occasions, we recommend black or dark blue alligator leather, which emphasises the chronograph's classical character. For daily wear, vegetable-tanned calf leather develops natural patina and ages beautifully. A technical rubber strap offers versatility and moisture resistance. For those seeking the ultimate, shell cordovan develops a stunning reddish patina over time.

Strap replacement requires removal of the spring bars securing the strap to the lug slots. Using a dedicated spring bar remover tool, gently press each spring bar inward to release tension, then slide out the worn strap. Align the new strap's holes with the lug slots and reinsert the spring bars until they click into place. If you're uncertain, consult a professional—incorrect installation could damage both strap and case lugs.

Absolutely. Any quality 20mm strap—in alligator, calf, cordovan, rubber, or canvas—is compatible with this model. Compatibility is guaranteed by the standardised 20mm lug width. Choose established manufacturers specialising in artisanal watch straps to ensure finishes, stitching, and premium materials worthy of your timepiece's value.

Leather strap longevity depends on wear frequency, environmental conditions, and tanning method. Quality vegetable-tanned calf, worn daily, typically lasts 3–5 years before significant wear appears. Alligator, more durable, can last 5–7 years. Shell cordovan, if properly maintained, can exceed 10 years. Regular exposure to moisture, heat, and UV radiation shortens lifespan considerably. Periodic cleaning and dry storage extend strap life significantly.