Luna Magna features Arnold & Son’s first three-dimensional moon and the largest rotating moon ever created in relief for a wristwatch. Presented in a 44 mm platinum case, Arnold & Son has recreated one of its distinctive designs. The off-centred hours and minutes dial at 12 o’clock frees up substantial space for displaying complications, such as this spherical moon measuring 12 mm in diameter. The visible crescent of the moon lights up at night thanks to the Super-LumiNova. The shaded part is made up of meteorite, a feat never used in this three-dimensional configuration. The large moon emerges from the main plate of the A&S1021 calibre without upsetting the overall balance of the timepiece. The lunar globe thus appears halfway up the movement, perfectly positioned between the top and bottom. The upper part is encased in a glass box. This technique has been repeated on the case-back side, where the sapphire crystal rests on the wrist. By placing most of the volume in these sapphire crystals, the Luna Magna’s case has a total height of 15.9 mm. Luna Magna is driven by the A&S1021 calibre, which has been fully developed, manufactured, assembled, and adjusted in the Manufacture. This new hand-wound calibre, which has been designed with the lunar globe in mind, features a 90-hour power reserve and a regulating organ oscillating at a frequency of 3 Hz. The movement also includes a secondary display detailing the age of the moon on the case-back side.
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