Omega · Seamaster Planet Ocean
Strap for Seamaster Planet Ocean 600M Co-Axial 37.5 Stainless Steel / Diamond / White / Alligator
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Seamaster Planet Ocean 232.18.38.20.04.001 (aka: 23218382004001)
Selected for the 20 mm lug width · workshop selection
Black Alligator Strap with Light Blue Edges€149
Red Alligator Strap Water Resistant€195
Green Rubberized Alligator Strap with Ecru Tribal Stitching€149
Military Alligator Green Strap€138
Hammered Calfskin Strap Light Blue€98
The Seamaster Planet Ocean 232.18.38.20.04.001 (aka: 23218382004001), seen from the bench
Frequently asked questions
What is the lug width of the Omega Seamaster Planet Ocean 232.18.38.20.04.001?
The lug width of reference 232.18.38.20.04.001 is 20mm, the standard size for this 37.50mm stainless steel model. This dimension ensures harmonious proportions between the case and the strap, maintaining the aesthetic balance designed by Omega.
What is the best strap for the Omega Seamaster Planet Ocean 232.18.38.20.04.001?
The choice depends on use and personal aesthetics. For formal elegance, black or dark brown alligator amplifies the red dial. For everyday versatility, taupe or black calf leather. For aquatic environments, rubber or Tropic rubber are the pure technical choice thanks to their hygroelasticity.
How to change the strap on the Omega Seamaster Planet Ocean 232.18.38.20.04.001?
Position the watch on a protective pad. Using a spring bar tool, press inward the small spring that secures the lug to the case. This releases the lug from the old strap. Repeat on the other side, then insert the lugs into the new strap and re-anchor them to the case.
Are aftermarket straps compatible with the 232.18.38.20.04.001?
Yes, any strap with a 20mm lug width is compatible. On milanostraps.it you will find artisanal straps in leather, rubber and noble materials, customizable in sizes and details. The Casati Milano atelier also offers fully bespoke strap creation.
How long does a leather strap last on a Seamaster Planet Ocean?
A high-quality leather strap typically lasts 3-5 years with regular use and ordinary maintenance (light cleaning, drying after immersions). Vegetable tanning ages better by developing patina, while rubber maintains elasticity for 5-7 years if not exposed to prolonged direct ultraviolet light.
The next step
The right strap isn't chosen. It is built, together.
From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only

