Strap for Marine Tourbillon 5577 Platinum / Blue / Alligator

The lug width of the Breguet Marine 5577PT/Y2/9WV measures 20mm at the case attachment point. This is the standard measurement to use when selecting any compatible strap, whether custom-made or ready-to-wear.

For a 950 platinum case with a guilloché silver dial, a Louisiana alligator crocodile leather strap is the most appropriate choice: antracite gray or midnight blue tones enhance the cool luminosity of the white metal. Alternatively, a vulcanized rubber strap is ideal for marine use, respecting the original nautical vocation of the Marine.

Strap replacement requires a fine-tipped spring bar tool or precision flat screwdriver to remove the 20mm spring bars that connect the strap to the case lugs. Given the value of the platinum case, it is advisable to entrust this to an experienced watchmaker or proceed with extreme care to avoid scratching the satin and polished surfaces.

Yes. All straps with a standard 20mm attachment are compatible with the Breguet Marine 5577PT/Y2/9WV. Milano Straps offers a selection of handcrafted leather, rubber, and NATO fabric straps specifically catalogued for 20mm lugs, with finishes and materials suited to the haute horlogerie segment. For a fully customized solution, the Casati Milano atelier creates bespoke straps made to order.

A quality leather strap — alligator or box-grain calf — with daily use has an average lifespan of 12–24 months before significant wear appears on the buckle and keeper. Longevity depends on exposure to moisture, perspiration, and heat: for a Marine with nautical purpose, a rubber strap is preferable in marine environments, reserving leather for formal and dry use. Casati Milano straps are covered by an 18-month warranty against manufacturing defects.