Strap for Saint-Imier Date 30 Two Tone

The lug width of the Longines Saint Imier L2.563.5.79.7 is 15mm. This measurement is critical for strap compatibility. It is measured from the inner shoulder of one lug to the inner shoulder of the other, using a digital calliper. A 15mm strap fits perfectly without play, maintaining visual harmony with the 30mm case.

For the Saint Imier L2.563.5.79.7, we recommend polished alligator in teak or cognac brown for formal occasions, grained leather in black or brown for daily wear, or shell cordovan for those investing in generational quality. The choice depends on context: for a traditional dress watch, polished leathers are preferable; for versatility, opt for grain finish that ages naturally.

Changing the strap requires a strap removal tool or small screwdriver to gently press the spring bars retaining the lugs. Position the watch with the case facing up, locate the access hole in the bar, press inward to slide the bar out of the lug. Repeat for both sides. Insert the new strap by aligning the holes with the lugs, then push the bar until it clicks into place. Avoid abrupt movements that could scratch the case.

Yes, any aftermarket strap with a 15mm lug width is compatible. Always verify that the strap explicitly declares 15mm lug width. Ensure the leather thickness is not excessive (maximum 3-4mm), otherwise insertion may be difficult. Milano Straps strap products are tested for full compatibility with this reference.

Durability depends on material and usage. A quality alligator strap, with regular care (protection from water and direct sunlight), lasts 3-5 years. A smooth calf strap lasts 2-3 years for daily wear. Shell cordovan, being extremely durable, can last 8-10 years or more. Factors such as humidity, perspiration, and lack of maintenance reduce lifespan. A water-resistant treatment significantly extends durability.