The Duometre series for JLC is one of the brand's most interesting, technically thoughtful and downright impressive lines and often times I feel like it's totally forgotten in place of the classic Reverso or more digestible Deep Sea series – that's a real shame. This year, we didn't see anything new from a technical standpoint, rather just a new take an existing model – the Duometre a Quantieme Lunaire, now available in a limited run with a grand feu enamel dial.
First, for those who don't know, what makes the Duometre series so special is the dual-wing concept on which its calibers are based. Take the caliber 381 you see here, built out of German silver and complete with a patented "dual wing" power system. Essentially all Duometre watches from JLC have two distinct power sources, each with a 50 hour power reserve. The first, regulated by the escapement and balance, is dedicated completely to timekeeping. The second source of energy is devoted to the display of the secondary fuctions like the display of hours, minutes, seconds, calendar, and moon phase. The who are synchronized by the jumping seconds hand seen at 6 o'clock. Essentially, this allows the watch to run as precisely as a chronometer, without the potential downfall of any complications pulling power away from time keeping. Pretty cool, no?
It is, but the caliber 381 isn't new – its dial is. The eggshell like pattern that you may be used to on this watch has been replaced, for only 200 examples, with a milky, shiny white grand feu enamle, and the result is just awesome. The case of this LE is 40.5mm in solid 18k white gold, and price will be 42,000 euros.
This is really Jaeger-LeCoultre at its purest expression of innovative, true haute horlogerie, and it's a very serious watch that deserves your attention. You can read more about it here.