Jaeger-LeCoultre · Automatic

899AC

Caliber 899AC was introduced in 2020 as an updated version of caliber 899 (/1). This new version offers a 70 hours power reserve which is achieved through optimizing the performance, notably through a new barrel design, new forms of lubrication, a new adjustment of the second hand, and a the silicon escapement (a first) which significantly reduces friction.