
The self-winding L156.1 DATOMATIC® calibre is hand-assembled and finished to exacting standards, featuring a hand-engraved balance bridge and a platinum centrifugal mass on the unidirectional rotor. It operates at 28,800 semi-oscillations per hour (4 Hz) using a shock-resistant cam-poised balance and an in-house balance spring. Functions include hours, minutes, subsidiary seconds with stop-seconds, day and date displays, and a column-wheel chronograph with a 60-minute counter.