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The three-dimensional, openwork movement and dial of the Nebula offer views into the very heart of the in-house manufacture calibre. Two mainspring barrels providing a 90-day power reserve at the top. The view through the display back reveals even more of the superlatively hand-finished movement, with its skeletonized and chamfered main plate with polished edges, gold chatons and gears featuring polished chamfers. The Nebula is available in red gold or stainless steel case, with a sapphire crystal display back.