Arnold & Son combines unique materials and complications with the Luna Magna Platinum. Featuring the world's largest 3D moon phase indicator, the sixth rendition of this collection has a subtle color palette with sand-colored PVD-treated meteorite and white opal. Both the opal moon and hour sub-dial are treated with Super-Luminova, so it glows at night and gives maximum legibility. The moon phase complication takes into account the 29 days, 12 hours, 44 minutes, and 2.8 seconds of the complete lunar cycle, and if the watch is kept wound, it will only need a one-day adjustment in 122 years. Limited to 28 pieces.