Breguet
Classique 5717PT/US/9ZU— lug 18mm

The Breguet Classique 5717PT/US/9ZU is fitted with a strap featuring 18 mm lugs. This measurement is determined by the lug geometry of the 43 mm platinum case and is a fixed value: it is essential to use a strap of exactly 18 mm to ensure correct, secure, and aesthetically proportionate installation.

For the platinum case of the Classique 5717PT/US/9ZU, the most suitable strap is smooth alligator (Alligator mississippiensis) in smoke grey, midnight blue, or deep burgundy tones. The uniform grain and polished surface respect the Classique aesthetic register of the watch and complement the cool chromatic temperature of platinum. Polished black box-calf leather is an excellent alternative for those seeking simplicity and durability.

The strap is removed using a dedicated lever tool (spring bar tool) that compresses the spring bars housed in the lugs. This operation requires care to avoid scratching the platinum case: it is recommended to place it on a soft cloth and operate with a fine-pointed lever. Alternatively, the replacement service is available at the Casati Milano atelier by appointment.

Yes. Any strap with 18 mm lugs and standard length (approximately 115/75 mm) is physically compatible with the Breguet Classique 5717PT/US/9ZU. A selection of artisanal 18 mm straps in various materials and finishes is available on milanostraps.it, crafted to respect the proportions and aesthetic character of haute horlogerie watches such as this Breguet.

Durability depends on leather quality and conditions of use. An artisanal alligator or calf strap of quality, kept away from water, excessive perspiration, and heat sources, maintains structural and aesthetic integrity for 2–4 years with daily wear. Casati Milano guarantees its straps for 18 months against manufacturing defects. To extend strap life, it is recommended to alternate between two straps and periodically apply a conditioner specifically formulated for fine leather.