Patek's 240 caliber has got some competition!!! Micro rotor for the win! I see two barrels stacked! Amazing they could fit two barrels stacked in such a thin movement; 65 hours s 48 in the Chopard and Patek Philippe respectively. Chopard 96's winding rotor diameter is much smaller than the Patek Philippe 240 caliber rotor. Balance wheel is also much smaller on the Chopard. The Chopard 96 movement is about 28mm wide, the Patek Philippe 240 caliber is about 31mm wide.