Omega · Seamaster Planet Ocean
Strap for Seamaster Planet Ocean Ultra Deep O-Megasteel / Summer Blue / Bracelet
Takes 22 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 215.30.46.21.03.002 (aka: 21530462103002)
Selected for the 22 mm lug width · workshop selection
Natural Calfskin NATO Strap€80
Black Calfskin NATO Strap 20mm€80
Grand Cavalier Military Brown Leather Strap€120
Dark Brown Calfskin Military Strap€80
Novonappa Black Military Style Strap for IWC Pilot€155
The Seamaster Planet Ocean 215.30.46.21.03.002 (aka: 21530462103002), seen from the bench
Frequently asked questions
What is the exact lug width of the Omega Seamaster Planet Ocean 215.30.46.21.03.002?
The lug width is 22mm. This dimension is compatible with the extensive collection of <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-22mm">22mm watch straps</a> available on Milano Straps, from leather straps to sporty rubber models.
Which strap is recommended for the Omega Seamaster Planet Ocean 215.30.46.21.03.002?
To enhance the sporty character and diving vocation, we recommend <a href="/pages/termine-glossario/concia-vegetale">vegetable tanning</a> in dark tones (brown, burnt cognac) or <a href="/pages/termine-glossario/alligatore">alligator</a> with vertical grain. For frequent water use, vulcanized rubber straps guarantee maximum resistance to moisture and chlorine.
How do you change the strap on the Omega Seamaster Planet Ocean 215.30.46.21.03.002?
The straight 22mm lugs are removed using a springbar tool, a fork-shaped instrument that compresses the internal spring. Position the tool from the inside of the lug, press gently toward the center of the case and slide off the old strap. Proceed with the same operation on the opposite side. Inserting the new strap is performed in reverse order, ensuring that the springbar is correctly positioned.
Which aftermarket straps are compatible with this Omega model?
All <a href="https://milanostraps.it/collections/cinturini-orologi-per-misura-ansa-22mm">straps with 22mm lug width</a> are compatible. Milano Straps offers artisanal Italian leathers: Tuscan leather in vegetable tanning, smooth calf, ostrich leather and structured alligator. It is possible to customize thickness, length, thread color and add embroidered initials.
How long does a leather strap last on a watch like the Omega Seamaster Planet Ocean?
An artisanal <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned leather</a> strap, if subjected to moderate use, has an average lifespan of 3-5 years. With frequent use in humid environments (swimming pool, sea), the useful life is reduced to 18-24 months. Casati Milano guarantees 18 months on every customized strap. The natural patina that develops is appreciated by collectors as an indicator of authentic wear and the object's history.
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

