The Jaeger-LeCoultre Geophysic® True Second is a round watch introduced in 2015 with simple lines housing the latest-generation automatic calibre: Calibre 770. This calibre is equipped with the new Gyrolab® balance and the “true seconds“ complication.Reference 8018420 has a stainless steel case and a blue dial. This limited edition of 100 pieces was added to the line-up in late 2017.
