Strap for Seamaster Diver 300M Automatic 36.25 Stainless Steel / White / Bracelet

The lug width of the Seamaster Diver 300M 2552.20.00 measures exactly 20mm. It is important to measure from the center of one lug to the center of the other to verify the compatibility of aftermarket straps. A half-millimeter error can cause instability.

For the 2552.20.00 we recommend first-grade African alligator for daily elegance, shell cordovan for those who love deep patina, nylon NATO for saltwater, and FKM rubber for technical diving. The choice depends on use: formal, smart casual or underwater.

Position the watch with the case facing up on a soft surface. Use a spring bar removal tool or a small flat screwdriver to gently push through the lateral access holes. Extract the steel spring bars, remove the old strap and insert the new one by aligning the holes, then reinsert the spring bars.

Both are compatible if they respect the 20mm lug width and 3.8-4mm thickness. A quality aftermarket strap equivalent to the original offers greater aesthetic customization and lower costs while maintaining equal technical robustness.

A quality leather strap lasts 3-5 years with daily use and ordinary maintenance (quick drying after wetting, bi-annual conditioning with natural creams). In saline or humid environments, durability tends toward the lower end. Rubber and NATO last longer, 5-7 years.