This time, the MB&F HM9 SV Sapphire Vision is being presented in two new editions in sapphire crystal, again limited to only five pieces each: the first one with an 18K yellow gold frame with green-CVD movement, and the second one with an 18K white gold frame with blue-CVD movement. An outer hull of sapphire crystal and precious metal, curved and bubbled and precisely fitted together in three parts, is sealed with a proprietary combination of a patented three-dimensional gasket and a high-tech compound bonding process.