Jaeger-LeCoultre Master Control Eight Days Perpetual Q1613401

The Master Eight Days perpetual by Jeager-LeCoultre is an impressive timepiece equipped with a high complication movement.

The timepiece comes dressed in 18K white gold with a diamond set crown. The case measures 40 mm in Diameter by 12 mm in thickness. From lug to lug the Master control Eight Days measures 47.8 mm and in between the lugs there’s enough space to fit a 21 mm strap. The one shown here is a black alligator leather strap which has an 18K white gold deployant buckle.

Under the sapphire crystal is a silver dial which has a lot going on but is very well balance and easy to read. The dial features white gold hands and diamond set on the hour markers. The complication includes sub-dials for day, month and date indicator surrounding the moon-phase. There is also an aperture at the bottom half of the dial for the Year indicator.

Above the impressive perpetual complication, there are 2 more small indicators The one on the left is a power reserve indicator and the one on the right, is a day/night indicator with an aperture indicating the red zone.

Under the hood, is JLC’s caliber 876 based on caliber 879. This manual movement works at 4 hertz using 37 jewels and has an impressive 8 days power reserve thanks to the twin mainspring barrels. The caliber is adjusted in 6 positions and comes with a free sprung balance wheel.

The perpetual calendar is mechanically programed until the year 2100 and it can be adjusted with the single pusher located on the left side of the case. This is a sophisticated complication that was originally developed in the 80s by IWC‘s watchmaker, Kurt Klaus.

This Jaeger has a water resistance rating at 50 meters which is a little more than typical dress watches but still not recommended for swimming.