Corum CO 313

The world's first automatic linear-winding baguette movement, the CO 313 represents over four years of development. Features a unique linear oscillating weight made of platinum (4 grams) that travels on rails, providing unidirectional winding via a rack and reverser system with ceramic ball bearings. The movement consists of 194 parts with 18K gold mainplate and bridges featuring vertical guilloché decoration. A breakthrough in watchmaking engineering that maintains the Golden Bridge's iconic linear aesthetic while adding automatic winding.