Strap for Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer Chronograph Stainless Steel / Grey / NATO

The lug width of the Seamaster Planet Ocean reference 215.32.46.51.99.001 is 22mm. This measurement represents the distance between the two hinge pins on the case and is essential for selecting compatible straps. Always verify the measurement personally before purchasing an aftermarket strap.

For the Seamaster Planet Ocean, the following are recommended: vegetable-tanned alligator for elegance and evolving patina over time; Tuscan calf with water-repellent treatment for daily wear; FKM rubber for regular diving and humid environments; NATO fabric in cotton-polyester for durability and practicality. The choice depends on primary use and context (formal, sporty, underwater).

To change the strap: 1) Obtain a spring bar tool (Y-shaped or fork-type); 2) Insert the tool tip into the gap between the case and lug to compress the pin; 3) Slide the strap out of the case; 4) Insert the new strap, aligning the two pins to the case holes; 5) Verify that the strap is correctly positioned. For precision instruments and professional methods, consult a specialized atelier.

Any strap with a 22mm lug width is compatible with the Seamaster Planet Ocean 215.32.46.51.99.001. Verify that the strap is constructed to resist moisture and pressure, especially if used in aquatic environments. We recommend artisanal straps with thicknesses of 1.4-1.6mm to ensure durability and comfort on a 45.50mm case.

A quality leather strap with vegetable tanning lasts 2-4 years with regular use, considering contact with fresh/saltwater. Durability varies based on immersion frequency, sun exposure, and maintenance (regular cleaning with a damp cloth). For predominantly underwater use, an FKM rubber strap offers superior longevity (5-7 years). The Casati Milano atelier provides an 18-month warranty on all custom straps.