Jaeger LeCoultre is one of the amazing watchmaking houses who are not only one of the very few who can claim to manufacture almost everything in house, but also one which continues to push the envelope of fine watchmaking. Not satisfied with a moonphase display accurate to 1 day in 122, they went all the way, and broke the record of 1 day in 1058 (held by sister company Lange in their 1815 Moonphase) by almost 3 times!
The Duomètre Sphérotourbillon Moon is a stunning new watch, announced in SIHH 2015, and we have featured the press release with full specifications here. Recently, we got a hands-on session with the watch and bring you this review.
The watch features the now iconic JLC dual wing concept, which they call the Duomètre: this is a system where two trains regulated by a single organ, in this case the Sphérotourbillon. This concept allows the timekeeping train to be dedicated to accuracy, and the other train to the secondary complication, in this case the ultra-accurate moonphase.
The moonphase display is accurate up to 1 day in 3887 years! And is the most accurate moonphase ever created. The magnificent lapis lazuli dial on which the gold applique moon and stars are places adds to the visual impact and beauty of this watch.
The amazing Sphérotourbillon is not new to JLC in 2015, but still carries with it the mystique and charm as it did in its debut in 2012. The tourbillon is set an angle, which is the almost same as the Earth’s own tilt axis. The Earth’s axis is tilted approximately 23°, and the Sphérotourbillon’s second axis is tilted at 20°.
But the tourbillon holds another trick up its sleeve. At the caseband at 2 o’clock is a button. When pushed, it resets the small seconds hand to zero, and keeps it there as long as the button is depressed. The movement train and the regulating organ is not stopped, but the seconds hand reset and held in place till the button is released, instantly synchronizing the watch to the time signal.
The movement is classical JLC Duomètre: nicely finished, beautifully laid out, with classical aesthetics. The finishing is excellent. The wolf’s teeth on the barrels which engages to the elaborate click system is a throwback to the traditional Valee de Joux classical watchmaking. As is the movement in nickle silver (aka German Silver or maillechort) and the beautifully polished anglash that adorns all the bridges. The bridges also feature the sharp outward pointing edges and a few inward pointing ones, which are impossible to execute by machine and must be painstakingly done by hand.
On the wrist, the 42mm diameter case, 14.3mm high is very comfortable. And looks amazing.