Strap for Seamaster Planet Ocean 600M Co-Axial 42 Stainless Steel / Orange / Orange Rubber

The Seamaster Planet Ocean 2909.50.83 requires a strap with a 20mm lug width. This width is specific to the model and must be respected to ensure the strap slides smoothly through the case lugs without play. Always measure with a digital caliper between the inside of the two lugs to verify the tolerance of ±0.1mm.

For the Seamaster Planet Ocean we recommend dyed alligator (black, dark brown or blue) for certified elegance, vegetable-tanned calf for natural patina over time, or FKM rubber for sportiness and resistance to salt water. The choice depends on use: office and formal occasions recommend premium leather, marine environments and intensive use favour structured rubber.

Use a spring bar tool to gently remove the two elastic pins located on either side of the lug. Place the watch on a soft surface (rubber mat), insert the tool blade into the small internal hole next to the pin and press upward to release the spring. Repeat on the other side, insert the new strap by aligning the lug to the holes, then reinsert the pins with equal care.

Yes, provided they respect the 20mm lug width and have a link width consistent with the case design. Straps with a smaller diameter cause harmful play, while oversized ones risk stressing the lugs. We always recommend verifying tolerances with the seller before purchase and choosing specialized craftsmen such as Casati Milano for optimal results.

A quality alligator or calf strap, used with normal maintenance, lasts an average of 3-5 years in daily use. Durability depends on exposure to sun, humidity and salt water. Straps with vegetable tanning age by developing natural patina, while industrial ones tend to fade. An FKM rubber strap resists 5-7 years while maintaining intact elasticity. Casati Milano's 18-month warranty covers manufacturing defects and ordinary wear.