Strap for Seamaster Planet Ocean 600M Co-Axial 45.5 Master Chronometer GMT Big Blue

The lug width of the Seamaster Planet Ocean 215.92.46.22.03.001 is 22 mm. This measurement is taken between the two inner lugs that secure the strap to the watch case, and it is the parameter that determines compatibility with any aftermarket strap. A strap with a lug width different from 22 mm will not be compatible with this model.

The ideal strap depends on use and aesthetic preference. For formal elegance we recommend dark blue or black alligator; for sportiness and durability, shell cordovan or British canvas NATO; for organic patina and noble aging, vegetable-tanned calf leather. Your choice should amplify, not contradict, the watch's diving vocation.

Remove the spring bars from the lugs using a dedicated tool (spring bar tool). Insert the new strap by aligning the holes with the inner lugs, then reinsert the spring bars. Verify that the strap has a 22 mm lug width and that it has been installed symmetrically. If the strap is very stiff, you can soften it with a hair dryer on low heat.

All straps with a 22 mm lug width are compatible with this Seamaster. On milanostraps.it you will find a selection of handcrafted straps in alligator, shell cordovan, vegetable-tanned calf leather, and NATO, customizable in color, size and stitching. Consult the collection dedicated to 22 mm straps.

The lifespan of a leather strap depends on the material and usage. With vegetable tanning and quality leather, you can expect 18-24 months of intense daily use before visible signs of wear. Alligator tends to last slightly longer. Rotating between multiple straps, cleaning regularly, and storing them in dry environments significantly extends the strap's life. Casati Milano guarantees its handcrafted straps for 18 months.