The movement within is the self-winding IWC replica watches caliber 51950, which is based on the Caliber 51900 found in IWC’s other replica watches uk like the Portugieser Tourbillon Mystere Retrograde but with the ingenious 82-part perpetual calendar module developed by Kurt Klaus.
This movement also features IWC’s Pellaton winding system and has a generous power reserve of 168 hours, or 7 days. It is visible through a sapphire display caseback and comes with a special commemorative 18k gold rotor.
The other tourbillon watch that IWC replica uk has specially prepared for its 150th anniversary is the Portugieser Constant-Force Tourbillon Edition “150 Years.” This comes in a slightly larger 46mm wide Portugieser style case and is only available in platinum. Water resistance is a mere 30m, and the watch comes paired with a black alligator strap by Santoni.