The most striking feature of the Aquatimer Perpetual Calendar Digital Date-Month Edition “50 Years Aquatimer” is the matte black Ceratanium® case. A team of specialists at IWC worked for more than 5 years to develop this new material, which is based on a titanium alloy. A special manufacturing process gives the metal a black, ceramic finish. As light and robust as titanium, Ceratanium® is also as hard and scratch-resistant as ceramic. Furthermore, the material boasts high skin tolerance and corrosion-resistance. The watch features a black dial to complement the case, while the self-winding IWC-manufactured 89802-calibre has several components which are finished in black, including the rotor. The integrated digital perpetual calendar displays the date and the month with large digits in the style of a digital watch. It recognizes leap years and the different lengths of the months. The chronograph with flyback function displays stopped times combined in a totalizer at 12 o’clock.
Ceratanium® case Diameter 49.0 mm Height 19.5 mm Screw in crown See-through sapphire glass back Water resistance 10 bar
89802 Calibre IWC-manufactured movement Automatic, self-winding 68 hours Power Reserve Frequency 28800.0 vph (4.0 hz) 474 Components 51 Jewels Côtes de Genève, perlage
Perpetual calendar with large double-digit displays for date and month and leap year display Chronograph function with hours, minutes and seconds Hour and minute counters combined in a totalizer at 12 o’clock Flyback function Mechanical external/internal rotating bezel with SafeDive system Sapphire glass, convex, antireflective coating on both sides IWC bracelet quick-change system Small hacking seconds Limited to 50 pieces
Black dial with luminescence
Black rubber strap with IWC-patented quick-change system Strap width 22 mm