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

The lug width of the 2598.80.00 is 20 mm. This measurement represents the distance between the inner shoulders of the two case lugs. All compatible straps must have a width of exactly 20 mm to fit correctly without play or excessive tension.

The choice depends on your usage. Modern-tanned alligator is ideal for formal and office settings, emphasizing Swiss refinement. Vegetable-tanned calf offers a patina that ages naturally. FKM rubber is the pure technical choice for frequent aquatic environments. A NATO strap in nautical fabric maintains the original sporty character. We recommend trying different materials to find the one that best matches your personal style.

The 2598.80.00 uses standard straight lugs with 20 mm width. To remove the strap, you need a dedicated tool (spring bar tool) to compress the tension springs of the attachment pins. Position the tool in the lateral spaces of the lug, press gently inward and extract the pin. Repeat on both sides. When installing the new strap, ensure the pins are perfectly seated in the lug slots, avoiding torsional stress.

Yes, absolutely. A 20 mm aftermarket strap is completely compatible with the 2598.80.00. Quality and durability depend on the manufacturer. We recommend choosing straps made by specialized craftsmen who understand the proportions of a 41.50 mm case and know how to balance thickness, rigidity and flexibility. Always verify that the strap is equipped with quality springs (stainless steel), warranties and certificates of origin.

The lifespan of a leather strap depends on usage, material and care. High-quality alligator with vegetable tanning lasts an average of 3-5 years with daily use before requiring replacement. Shell cordovan is more resistant and can last 5-7 years. Vegetable-tanned calf has an average life of 2-4 years. Critical factors: exposure to moisture, frequency of use, regular cleaning and drying after water contact. Casati Milano straps include an 18-month warranty against manufacturing defects.