L2.773.4.78.5

The Longines Master Collection 42 Chronograph Calendar has a case of 42mm, which houses a self-winding movement with full calendar, moon phase indicator, and chronograph. Reference L2.773.4.78.5 has a case of 42.00mm and a Silver dial. Pictured here with caliber L687.2, though it can be powered by either the L687 or L678 depending on the year of production.