1558420Ref

The Jaeger-LeCoultre Master Calendar automatic timepiece displays its calendar data—day, month, date, and moon phases—in a balanced and legible layout. Drawing inspiration from a 1945 historical calendar watch, this model maintains the refined aesthetic of the Master Control collection while offering compact proportions suitable for any wrist. A sapphire caseback reveals the movement and its classic finishes, with the caliber updated from 866 to 866/1 during production.