Seamaster Planet Ocean 600M 45.5mm Steel
Seamaster Planet Ocean 600M 45.5mm Steel
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Shipping, Delivery & Exchanges
Shipping, Delivery & Exchanges
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- Estimated Delivery: 5–12 Business Days
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DESCRIPTION
Watches — watch
Seamaster Planet Ocean 600M 45.5mm Steel
A transparent caseback turns the underside into part of the appeal, instead of a lid you never look at.

Sapphire Crystal
Sapphire crystal keeps the face readable after the knocks that leave softer glass hazy.
Anti-magnetic
Anti-magnetic by design, so it is at home on a desk crowded with electronics.
Screw-in crown
A screw-in crown closes with a turn, so the case is shut on purpose rather than by habit.
Why the open caseback changes things
Most watches give you one side to look at. This one has a transparent caseback, so the underside is finished to be seen and the watch stays interesting when it comes off your wrist. Sapphire crystal on the front and a crown that screws closed are the two parts that keep the rest of it in good order.


The watch that rewards a second look
The front of it does the work in a room — read quickly, placed quickly. The back is for the one person who asks to see it, and that conversation puts you somewhere different from the man whose watch has nothing to show. It is a quiet kind of standing, and it holds.
Something the catalogue misses
Turning it over in your hand
There is a particular pleasure in taking it off at the end of the evening and looking at the side nobody else gets to see.
Most of what a watch gives back is this: a small, private reason to be pleased with a thing you chose. Keep it in reach and you will reach for it.
What you are getting
- Crystal
- Sapphire Crystal
- Features
- Anti-magnetic
- Crown
- Screw-in crown
- Caseback
- Transparent caseback
Why it costs what it costs
We hold this stock ourselves and send it out from our own shelves. No boutique floor to pay for, nobody taking a cut in between — one step from our rack to your door instead of four. The piece is not cheaper; the route is shorter.
Store offer
Two pieces get you a cap. Three get you a cap and a wallet.
It runs across the whole store, so the pieces do not have to match.
- Any two items — a cap goes in the box, free.
- Any three or more — the cap plus a wallet.
A note on availability
These arrived as a small series and a restock is not guaranteed. When a batch like this does come round again, the detail is rarely quite the same.
Pick yours above.

Italian Heritage Since 1975
Founded in Italy in 1975, Arkon began as a family business driven by a passion for timeless men’s fashion and refined craftsmanship. What started as a small Italian house has grown into a recognized name in contemporary luxury, bringing together tradition, sophistication, and modern design.
Today, Arkon carries its heritage forward, creating a vision of menswear for those who believe true style is timeless.