9SA5

The 9SA5 is a self-winding movement featuring a unique Dual Impulse Escapement and an overcoil hairspring for optimized isochronism. Measuring 31.6mm by 5.18mm, it achieves a 15% slimmer profile through a horizontal barrel and gear train layout. Dual barrels provide an extended power reserve, while the construction ensures high shock resistance, instantaneous date changes, and a more comfortable fit on the wrist.