Strap for Seamaster Planet Ocean 600M Co-Axial 37.5 Titanium / LiquidMetal / Bracelet

The lug width of the Seamaster Planet Ocean 232.90.38.20.03.001 is 18 mm. This specific measurement derives from the geometry of the 37.50 mm case and is essential to guarantee compatibility with any replacement strap. To verify the correct measurement, measure the distance between the two pins that support the case on the spring bar side: it must be exactly 18 mm.

The choice depends on the primary use. For frequent diving or marine environments, we recommend FKM rubber or high-resistance nylon NATO straps, which resist chlorine and saltwater. For formal-sporty daytime wear, black alligator with vegetable tanning offers elegance and durability; Italian calf is ideal for those who prioritize comfort. Shell cordovan represents the most sophisticated compromise between aesthetics and aquatic functionality.

Strap replacement requires extraction of the horizontal pins from the lugs. Use a dedicated tool (spring bar tool) to compress the spring of the pins, gently extracting them from one side. Insert the new strap by aligning the pins in the appropriate slots and press until the locking click. It is recommended to proceed on a soft and well-lit surface to avoid accidental pin drops.

Yes, the Seamaster is compatible with any strap in 18 mm lug width made by artisanal or industrial manufacturers. Omega also provides dedicated official straps. We recommend always checking that the strap is constructed with standard 1.8 mm diameter spring bars to ensure safe and stable installation.

A quality leather strap (alligator, calf, shell cordovan) with vegetable tanning typically lasts 3-5 years of daily use. Durability depends on the frequency of immersion, sun exposure, and maintenance: rinse with fresh water after saltwater immersions, dry thoroughly, and occasionally apply a specific leather conditioning oil. Rubber or NATO straps have superior durability (8-10 years) but lose elasticity over time.