Caliber 866AA was introduced in 2020 as an updated version of caliber 866 (/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 which significantly reduces friction.

5 other watches in the library run the Jaeger Lecoultre 866AA.

Jaeger-LeCoultre - Q4142520 Master Control Calendar Pink Gold / Silver / Alligator

Ref. Q4142520 · 40 mm

Jaeger-LeCoultre - Q4148450 Master Control Calendar Stainless Steel / Silver Sector

Ref. Q4148450 · 40 mm

Jaeger-LeCoultre - Q4148421 Master Control Calendar Stainless Steel / Silver

Ref. Q4148421 · 40 mm

Jaeger-LeCoultre - Q4148120 Master Control Calendar Stainless Steel / Silver / Bracelet

Ref. Q4148120 · 40 mm