The watch boasts exceptional acoustic performances thanks to the patented "crystal gongs" system. The gong heel (shown here gilded and engraved with the number "1833"), is welded to the sapphire crystal in order to benefit from the celerity of the sapphire crystal which is far greater than that of the gongs.
The quality of the sound is improved by the latest research on the gongs, which are made from a special material and feature a progressive square section and fabrication in one piece, directly incorporating the heel.
Jaeger-LeCoultre Calibre 947, visible front and back
Open-worked dial, anti-reflective sapphire crystal: the mechanism is given centre-stage.
This movement with nickel-silver bridges and baseplate, has an exceptional decorations and a ruthenium coating.
A "torquemeter" to guarantee ideal accuracy:
The indication between 3 and 5 o'clock indicates the level of torque of the movement barrels. It provides a qualitative indication that serves as a complement to the quantitative information provided by the power reserve. When the hand dips below 4, it is advisable to wind the watch in order to enjoy the torque range ideally conducive to precision.
The 175 watches in this series will be meticulously and patiently crafted in the Manufacture's workshops.
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