http://www.thewatchbox.com Ah yes, the Jaeger-LeCoultre Master Eight Days Perpetual.. in 18-karat rose gold. JLC knows complications and high horology. The Le Sentier-based maison known as the "watchmaker's watchmaker" has been the first-choice engineering solution for brands such as Patek Philippe, Cartier, Vacheron Constantin, Audemars Piguet, Breguet, and many others for the better part of two centuries. Naturally, when a firm like that decides to sell a complicated wristwatch under its own marquee, the result will stun. Enter the Master Perpetual Eight Days in 18-karat rose gold. It's a winning combination of a complete perpetual calendar and a long power reserve to avoid the delicate process of resetting the displays. Perpetual calendars and eight day movements are house specials at luxury watch powerhouse Jaeger-LeCoultre. This Jaeger-LeCoultre Master Perpetual Eight Days is a value standout. Cognizant of the fact that perpetual calendar owners tend to be collectors with a "rotation" of watches, JLC combines their historic three-barrel "8-Day" base movement (a house special since the 1930s) with one of the world's finest perpetual calendar systems. If a collector cycles through his weekly roster while leaving a conventional perpetual alone, that watch will run out of mainspring wind before its turn in the rotation arrives; resetting a perpetual calendar is never fun, and JLC's massive "reserve de marche" avoids this inconvenience. If the worst comes to pass, and the displays do require a reset, Jaeger-LeCoultre makes the process as painless as possible. Thanks to sister firm IWC, Jaeger makes use of the legendary Kurt Klaus perpetual calendar system. A single pusher on the case flank adjusts each calendar display in coordinated sequence; simply cycle through the dates until you reach the present, and all indicators will move into agreement. Eight days is quite a while, so JLC offers a discreet power reserve gauge at 12 o'clock to remind the owner that the manual-wind mainspring is nearing exhaustion. Immediately adjacent, a "danger zone" indicator with AM/PM display helps to avoid perilous adjustment of the calendar during its period of engagement (roughly 9pm to 3am). This Jaeger-LeCoultre Master Perpetual Eight Days in 18-karat rose gold is available immediately from thewatchbox.com with all factory equipment. Books, papers, packaging, and accessories are included; this watch and associated items present exactly as if they were purchased from a Jaeger-LeCoultre boutique. All is included... all, that is, except the authorized dealer's price premium! Video and content by Tim Mosso.