The Replica Portugieser Perpetual Calendar Tourbillon has a 45-mm Portugieser case, with curved lugs and a relatively large crown. The dial’s outer edge features a railroad minute track recalling the marine chronometers that originally inspired the series, while applied Arabic numerals decorate most hour positions.
The right-hand side features an analog date indicator as well as a display for the impressive 7-day power reserve.Toward the bottom is an analog month indicator as well as the moon-phase, while the top is dedicated to showcasing the large aperture for the watch’s namesake tourbillon. Passing over the dial are two leaf hands for the hours and minutes.
This array of functions is powered by the IWC Replica Caliber 51950, an automatic movement with a gold oscillating rotor, visible via a sapphire caseback. Both the blue-dial and silver-dial versions of the watch are secured to the wrist via a blue alligator leather strap by Santoni.
Inside the new Tourbillon Rétrograde Chronograph is the IWC caliber 89900, made in-house by the brand. Like the movement powering its perpetual calendar-equipped sibling, this Replica Watch automatic mechanism features a gold oscillating weight, though it offers a smaller power reserve of 68 hours.
The chronograph movement notably features a flyback mechanism which gently “flies back” the chronograph seconds hand to zero upon reset, giving the watch an uncommon and luxurious aesthetic in its timekeeping.