Strap for La Grande Classique Quartz 29 Diamond Bezel

The lug width is 16mm, a non-standard measurement characteristic of Longines ladies' models and vintage Swiss watches. To verify compatibility, measure the distance between the horizontal pins in the lugs of the case. Precise measurement is essential to avoid incompatibility or damage to the pins.

High-quality alligator is the ideal luxury solution: the natural, regular texture complements rather than competes with the case's minimalist design. Alternatively, vegetable-tanned calf leather offers versatility and ages beautifully. Avoid heavily textured materials or poor-quality rubber that would visually overburden the wrist.

Use a dedicated spring bar tool. Rest the watch on a soft surface, insert the tool into the lug to gently lift the pin, remove the old strap, slide the new strap onto the same pin, and reposition the pin into the case's sockets. An experienced jeweller can perform this operation without risk.

Any strap with a 16mm lug width is compatible, provided it is made by specialised suppliers. Alligator, Italian calf, technical rubber, and shell cordovan are suitable materials. Always verify lug width before purchase to prevent incompatibility or damage to the case's pins.

A quality leather strap (alligator or vegetable-tanned calf) lasts from 3 to 7 years depending on use, maintenance, and exposure to perspiration and humidity. Rotating between different straps extends the life of each one. A well-made aftermarket strap typically comes with 18-24 months warranty from specialist suppliers such as Casati Milano.