Swiss brand has developed an unusual gong configuration for the minute repeater and now combines it with a perpetual calendar.
Following some antique pocket sonneries the guys at Jaeger-LeCoultre designed the gongs that are spread on the both sides of the movement instead of being completely flat. This obviously has made them a lot longer and, as a result, louder. Combine it with a rather large – for the usual dressy pieces produced by the brand, of course – 43 mm white gold case and you’ve got a very interesting watch from the acoustic point of view. Besides the square gong cross-sections and the articulated ‘trebuchet’ hammers, ensure that the gongs are struck with the greatest possible impact and the least interference from hammer recoil.
One more complication is the perpetual calendar with its indications separated over three sub-dials, with the date at 3 o’clock, the month at 6 o’clock, the day of the week and moon phase at 9 o’clock. It also integrates a full-year indication on 4 digits between 7 and 8. The intuitive Security zone appears in a dial aperture near the axis of the hour and minute hands. This indication appears between the hours of 10 pm and 1am, when adjusting the time or calendar is not advised due to the possibility of stressing or even damaging the movement. The full view on the mechanism is possible through the sapphire glass at the back of the watch. The Master Grande Tradition Répétition Minutes Perpétuelle comes in two dial variations, a neoclassical silver-grained dial and a blue guilloche enamel dial that is produced by hand in the Atelier des Métiers Rares. They are limited to 30 pieces each.