Strap for Seamaster Diver 300M Automatic 41.5 Chronograph Stainless Steel / White / Bracelet

The Seamaster Diver 300M 2598.20.00 has an internal lug width of 20mm. This dimension is calibrated to the 41.50mm case and guarantees the aesthetic balance of the model. Always verify internally with a calliper before purchasing an aftermarket strap.

It depends on use and aesthetic preference. For sober elegance: shell cordovan in bordeaux or brown. For everyday versatility: vegetable-tanned calf in cognac brown. For uncompromising sportiness: black vulcanized rubber. Pronounced-grain alligator amplifies the technical aspect. We always recommend evaluating the dial and the occasion of use.

The 2598.20.00 uses standard screw-down lugs of 20mm. Remove the previous strap by gently unscrewing the lug screws with a specific tool (strap remover). Position the new strap, aligning the holes, and screw back in clockwise. Do not overtighten to avoid damaging the steel. If you are not experienced, consult a professional watchmaker.

Yes, provided it respects the 20mm internal lug width. Non-certified straps may present irregular tolerances: always check that the lug is perfectly stable during wrist movement. Milano Straps straps are calibrated to this dimension and guaranteed for 18 months if purchased from Casati Milano.

A fine leather strap (alligator, shell cordovan, calf) typically lasts 3-5 years with daily use and proper maintenance. Durability depends on exposure to water, sun and frequency of wear. Rubber and NATO fabrics can last longer. Casati Milano offers an 18-month warranty on all custom straps.