Lemania 2320

The Lemania 2320 is a manual-winding, 21-jewel chronograph caliber and a variant of the 2310, featuring a swan-neck regulator for refined precision adjustment. It retains the 27mm diameter and column-wheel chronograph architecture of its base caliber, with enhanced finishing and an improved regulation system. As an in-house Lemania movement, it formed the basis for several legendary chronographs, including the Omega Caliber 321 used in the Speedmaster. Production has been discontinued.