Omega Seamaster Planet Ocean Ultra Deep iN O-Megasteel
This new collection by Omega is based on the record setting timepiece that went to the farthest depths of the ocean. We previously took a look at the titanium version, but today let’s focus on the steel options of the “Omega Seamaster Planet Ocean Ultra Deep”. But, this is no ordinary steel, it's the new proprietary alloy O-MegaSteel, which is worth further explanation.Out of the four releases that encompass this novel timepiece, three of them are crafted out of a proprietary alloy designated as O-Megasteel. This alloy took Omega five years to develop and is 40 to 50 percent harder than standard 316L steel, while also capable of withstanding double the pressure of conventional steel before suffering any damage. Omega was forced to develop this new alloy in order to achieve their diving goals because standard steel wouldn’t have been capable of reaching the same depths that titanium could.
These watches come in a 45.5mm case with a height of 18.12mm. The main difference between them and the titanium version is the lug-to-lug measurements, which are a bit shorter at 51.95mm, while the titanium option measures 56mm. The cases have an overall brushed finish with polished accents. 
Mounted to the cases are unidirectional rotating steel bezels with a ceramic insert in either blue, black, or orange with a diving scale in white enamel.
On the flip-side they all have a solid caseback that features a Grade 5 titanium medallion with a laser-engraved Sonar emblem of the iconic Omega Seahorse, while circling around is the inscription “DIVER”S WATCH 6000m PLANET OCEAN FOR SATURATION DIVING”. The design of this case allows for saturation diving without the need of a helium escape valve.
It comes equipped with a knurled screw-in crown, surrounded by a pair of newly designed crown guards to improve the protection and robustness of these watches.
But unlike the titanium version, the O-megasteel options have a more symmetrically designed case, capable of accommodating more than just the NATO strap. All topped by a domed sapphire crystal with anti-reflective coating on both sides. Water-resistance can reach up to an astonishing 6,000 meters (19, 685 feet).
Time is exhibited on a transparent lacquer dial in either a white dial with blue bezel, 
gradient blue-black dial with a black bezel, 
or a gradient grey-black dial with an orange bezel. In common they all feature 18k white gold hour index markers and the Arabic numerals: 3, 6, 9, and 12, which vary in colors. 
The central arrow-tipped 18k white gold hands and hour index markers have all been fitted with a Super-LumiNova coating, for an enhanced legibility. Meanwhile the central seconds hand all have different colored tips, which mostly match their bezel hue. Except for the gradient blue-black dial that has a black bezel, but used a cyan tip on the their seconds hand.
Omega Seamaster Planet Ocean Ultra Deep
The “Omega Seamaster Planet Ocean Ultra Deep” (References below) is powered by the in-house self-winding mechanical movement, caliber 8912 with 39 jewels and 25,200 vph. This is essentially the no-date version of the caliber 8900 and comes equipped with two barrels mounted in series, plus a co-axial escapement and silicon balance spring. Power reserve can last up to 60 hours, when fully wound.
For more up to date information visit the official Omega website here.
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