The Jaeger-LeCoultre Master Eight Days Perpetual 40 ref. 1618420 in stainless steel brings you the best perpetual calendar that money can buy at a fraction of the price with other brands. This fascinating complication is fitted with a case measuring 40mm in diameter that houses a manual wound caliber that provides a power reserve of 8 days —when fully wound— thanks to its two winding barrels. As you can appreciate in the pictures, the dial is very clean and perfectly balanced with the same indicators as the previous model but all of them placed in a more appealing way. This is the only perpetual calendar with an 8-day power reserve fitted with a manual winding movement and mechanically programmed until the year 2100. To make this watch even more interesting, Jaeger-LeCoultre continues to fit this complication with one single corrector to set all the functions of the perpetual calendar.