After HM9 'Air' and 'Road' editions conquered land and sky, MB&F's Horological Machine N°9 ‘Sapphire Vision', or HM9 SV, takes us to the depths of the ocean. This e xploratory vessel features a curved and bubbled outer hull of sapphire crystal and precious metal. Fitted together in three parts, the case is sealed with a proprietary combination of patented three-dimensional gasket and a high-tech compound bonding process. The SV editions are distinguished by propellers, co-axial beneath each of the balances: twin turbines that spin freely as an element of pure visual interest, awaiting someone to begin a new underwater exploration. Limited to 5 pieces. Brand: MB&F Model: HM9-SV YG/Green Reference Number: 91.SYL.GR Movement: Manual Winding Case Material: Sapphire and Yellow Gold Case Size: 47mm Dial: Green PVD Bracelet/Strap: Leather Gender: Men's Watch/Unisex Warranty: Manufacturer's 2 Year Warranty Shop other beautiful pieces in our MB&F Collection. For inquiries on this piece please contact boutique@shsilver.com