
Constant-Force Tourbillon
Because the Ingenieur line has been reimagined as an automotive, rather than engineer-centric, watch, the movement of the IWC Ingenieur Constant-Force Tourbillon Men's Watch replica is modelled after an engine block. It has a compact and clever constant force mechanism integrated into the tourbillon carriage.
"To drive the tourbillon and the constant-force mechanism, IWC equipped the 94800 and 94900 calibres with twin barrels. Together, they supply enough power to keep the mechanism running for about 48 hours" explains Gäumann. After two days, the available torque is no longer sufficient. At this point, the tourbillon automatically reverts to normal mode and advances at the rate of five steps a second, or at the same speed as the beats in the balance.
Case & Dial
The 46 mm case of the IWC Ingenieur watch replica is made in platinum and ceramic. The case rises slightly on the right side cupping the main crown in an effort to protect it from impacts. The case back is made from sapphire crystal, which evinces the highly technical movement.Perhaps the most striking part of the design, apart from the fascinating mechanical display of the constant force tourbillon, is the layout of the dial. The 3 subdials positioning at 1, 4 and 9 is a good twist from the conventional 3, 6, 9 layout. the watch also has a power display at four o'clock, and IWC’s signature double hemisphere moon phase at two o’clock. The dial is black and the hands are black toned and are coated with luminescence for optimal readability at night.

Moonphase Function
The other feature we were fascinated with is the moonphase. The moonphase display showcases 2 moons one representing the northern and the other the southern hemisphere. IWC's tasteful depiction of the moon is both realistic and artful. The manufacture used a special 3-D laser technique to render the surface to replicate the physical surface of the Moon. Tiny craters and intentional blemishes pepper the gray surface disc; which is also the right color, to create a realistic representation of the moon. The countdown display on the outer ring of the totalizer shows the number of days remaining before the next full moon.
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