For Baselworld 2016, Omega has redesigned its flagship Seamaster Planet Ocean 600M dive watch collection with a versatile 39.5mm case and upgraded Master Chronometer automatic movement. The black ceramic version includes near total immunity to scratches on its clasp, crystal, bezel, and case. As with all Omega Seamaster Professional dive watches, the Planet Ocean 39.5mm is equipped with robust water resistance, gas escape valve, and sophisticated displays for timing a dive.

The 39.5mm Omega Seamaster Planet Ocean 215.92.40.20.01.001 is less than 45mm from lug to lug and only 14.4mm thick; this is the most wearable Planet Ocean watch option for watch buyers with smaller wrists or a taste for traditional men's watch sizes.

Omega's black ceramic case is finished with diamond tools to create there same striking polish, satin surfaces, and sharp bevels seen on stainless steel Omega Seamaster. The case is equipped with a helium escape valve for saturation diving; a ceramic bezel insert with Omega Liquidmetal scale allows divers to time their immersions.

The dial of the Planet Ocean Black Ceramic is crafted from the same polished black ceramic used on the case, bezel, and clasp. All hands, the Omega logo, Arabic numerals, and hour indices are crafted from white gold for enduring luster and resistance to tarnish. Super luminova makes night time reading effortless for both divers and casual watch collectors.
Omega's caliber 8800 Master Chronometer is an automatic Swiss movement with a 55-hour power reserve. The co-axial chronometer is COSC certified and subsequently tested by Omega once installed into the final Planet Ocean watch. It features 35 jewels for smooth operation, a full balance bridge and a free sprung balance for stability against shock, and an Omega Si14 silicon hairspring for antimagnetic resistance of over 15,000 Gauss.

The Omega Seamaster Planet Ocean is water resistant to 600 meters and includes a helium escape valve for divers who work in exotic gas environments.

The Omega Seamaster Professional Planet Ocean Black Ceramic is encased in 39.5mm of ceramic surrounding a black dial on a black rubber strap. Functions include hours, minutes, seconds, date, and helium escape valve. The watch also measures 15mm in thickness and 44.8mm from lug-to-lug.

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Today, we discuss my favorite Planet Ocean. There is no doubt that this black ceramic Omega Seamaster Professional Planet Ocean 600m is my pick of the litter. The 39.5mm case size introduced in 2016, arguably the best and most versatile. This one entirely in black ceramic, also light on the wrist and scratch-proof. The timepiece is reasonably slim for a Planet Ocean at 15mm. This one will fit underneath a jacket cuff on my 16cm circumference wrist. You'll also note that it's relatively short lug-to-lug at 44.8mm. That's getting into 36mm Datejust territory. The spacing between the lugs is19mm and the strap, a deluxe piece nicely executed—anything but a standard design. You can see it has a bit of a diamond quilt pattern, but it's not made of calfskin. It's made of rubber. So, you can get this one wet, but it has a contrasting stitch like a leather strap and it has the image of bolstering. So, it actually has a molded-in flair to nicely match the swell of the looks so you get the visual advantage of bolstering and you get the contrasting stitch typically reserved for leather, but without the vulnerability to water. This one is a rubber strap through and through.

You get an Omega metal and ceramic hybrid deploying clasp, and you can see the ceramic is both satin and polished, remarkably rich twin trigger deployments—you must press both to open it up. And when you do, you can see there's a minderless system so you size it, and then you tuck excess length underneath the strap and that's how it works. There are no minder loops, there's no excess length flapping in the breeze. It's secure, it's premium, it's as scratch-resistant as the case, and it keeps the watch looking clean. The strap ends are curved to match the contours of the Omega Planet Ocean 36.5mm case so there's no daylight showing. The look is highly integrated and you can see that there's no flare or fight to the strap. It exits straight down out of the lugs, so you can wear this on a small wrist indeed.

Let's get closer to that bezel and appreciate some of the details of this watch, which makes glorious, multifaceted use of ceramic. First, the case for me, you know it well from Omega's Sports watches. Sheer sides with satin finish and polished bevels—that Omega can execute this in ceramic is a miracle of industry and engineering. And, I have to say that it's a testament to the technical might of the Swatch Group that this can be finished that way. They're in good company with Audemars Piguet in that regard. Helium escape valve, the timepiece featuring the ability to go on saturation dives using exotic gas mixtures. If you do that, if you were the type to dive the Andrea Doria for fun, you will know what that is and how to use it. For everyone else, James Bond had one on his watch and he once used it as a grenade. There's your conversation piece. The bezel is both deeply knurled on its outer circumference, so easier to grip than a diver 300, and nicely indexed. The click is loud and crisp. Line up that index with the minute hand and now you've got my favorite kind of chronograph in that it shows you, graphically, the cronos. This is better than a chronograph because most chronographs only give you up to 30 minutes on the minute register. This is up to an hour and I rarely time anything longer than an hour. You have a ceramic insert with white lacquer, the two robustly scratch-resistant such that it's going to maintain long wearing durability and it won't become the banged up New York City taxicab of past anodized bezels. The dial base is also ceramic on this Omega Planet Ocean 36.5mm. The dial base is zirconium oxide of high polish like the bezel itself, with the result that it has all the advantages of enamel gloss luster and depth-resistance to aging without many of the vulnerabilities of enamel.

All white gold indices, white gold hands, white gold try Arabics as the Planet Ocean is a flagship piece, and plenty of LumiNova—you will see that in a moment. Date window, hacking seconds, and a quick set date. Turn it all over. Caliber 8800—Master Chronometer, META-certified, tested as a fully-cased up watch rather than the bear movement of the COSC in 6 positions rather than the COSC’s 5 positions. 55-hour power reserve, 25-2 beat rate, full balance bridge with a free sprung index for shock-resistance.

SI silicon hairspring for anti-magnetism, and this chronometer features the exotic tri-level tangential contact coaxial movement invented by Dr. George Daniels, and industrialized by Omega. Still the most impressive escapement you can buy under $50,000. The naiad lock caseback keeps everything aligned top to bottom. So, no matter how many times this case back is screwed back in by your Omega watchmaker, it will always align perfectly top to bottom. Arabesque condition and blackened rather than blued or polished screw heads. This is a timepiece that does it all. Once more—perfect size, perfect color, scratch-resistant, highly functional and wearable with a suit. This is my favorite Planet Ocean.

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