IWC Da Vinci
IWC played a significant role in the development of the first Swiss quartz movement. And so it came that the first Da Vinci in 1969 was surprisingly a quartz movement watch in a gold case.However, around fifteen years later, the management recognised the potential of high-quality mechanical movements and encouraged head watchmaker Kurt Klaus to develop a mechanical perpetual calendar. In 1985, the Da Vinci Perpetual Calendar premiered in Basel. The calendar module requires virtually no adjustment before 2499 and can be set and adjusted simply by turning the crown.