Sept. 20, 2017, Schaffhausen– To celebrate the 50th anniversary of the launch of the Ocean Time Series diver’s watch, Schaffhausen IWC launched the first Ceratanium® (ceramic titanium) Metal) special edition watch. This unique material combines the characteristics of both titanium and ceramic materials: it is as light and sturdy as titanium, as hard as ceramic and resistant to friction. Not only that, the watch made with this new material stands out with its skin-friendly and unique texture matte black shape, while integrating the digital perpetual calendar display and timing function.

   Early in the early days of scuba diving, IWC launched the Ocean Timepiece, the first in 1967. This marine timepiece is water-resistant to 200 meters and equipped with a rotating inner ring for setting the diving time. IWC has thus laid the foundation for the performance of diver’s watches, providing an underwater and land adventure. A reliable companion. At the 50th anniversary of the launch of the Ocean Timepiece, IWC created the first watch with a Ceratanium® case. ‘Thanks to the use of titanium and ceramic materials, we achieved pioneering watchmaking in the 1980s. Today, Ceratanium® has once again validated our expertise in material applications.’ IWC Schaffhausen Chief Executive Officer Christoph Grainger-Herr said.

   The special edition of IWC Marine Timepiece Perpetual Calendar Digital Date Month Watch ’50th Anniversary of Marine Timepiece’ (model: IW379403) is limited to 50 pieces. The most significant feature is the new Ceratanium® case. IWC’s material experts worked hard for more than five years to finally create this unique material based on titanium alloy. Ceratanium® is light in weight, not as easy to break as titanium, and at the same time has ceramic hard and frictional properties. Another major advantage is its skin-friendly and high corrosion resistance. Through a special manufacturing process, this metallic material has a black ceramic surface and a black dial, which is uniquely attractive. Not only that, some parts of the 89802-made homemade movement, such as the self-winding oscillating weight, have also been blackened. The watch is equipped with a digital perpetual calendar display function, which displays large Arabic numeral dates and months in the style of a digital watch, and can automatically recognize different lengths of months and peace and leap years. The chronograph with flyback function displays the time in combination on the chronograph dial at 12 o’clock.

   Like all marine timepiece models, this 10 bar water-resistant timepiece is equipped with an inner and outer rotating bezel for setting the diving time. The IWC SafeDive system ensures that the rotating inner ring can only be set when the rotating outer ring is turned counterclockwise. Therefore, even if the rotating outer ring is inadvertently adjusted, the diver can be safely returned within the zeroing time (that is, the time required for the diver to safely rise to the surface without decompression). It is also worth mentioning that the quick-change system of the bracelet can easily replace the black rubber strap of this watch.

IWC Marine Timepiece Perpetual Calendar Digital Date Month Watch
’50th Anniversary of Ocean Timepiece’ Special Edition

Model IW379403
Reference retail price: RMB 370,000

Technical characteristics
   Mechanical chronograph movement-Perpetual calendar-Large two-digit date and month display-Hour, minute and second timekeeping function-Hours, minutes and seconds displayed at 12 o’clock Stop device – mechanical inner and outer rotating bezel with IWC safety diving system – hands, dial and rotating inner ring with luminous coating – screw-down crown – transparent sapphire glass bottom – IWC bracelet quick-change system – Limited edition of 50 pieces.


IWC-manufactured movement 89802
Vibration frequency: 28,800 times / 4 Hz
Gems: 51
Power reserve: 68 hours
Winding: automatic winding
Material: Ceratanium® case, black dial, black and red hands, black rubber strap
Table mirror: double-sided anti-reflective convex sapphire glass
Water resistance: 10 bar
Diameter: 49 mm
Case thickness: 19.5 mm