Ratio FreeDiver Helium Safe 1000M Sapphire Quartz 1038EF102V Mens Watch features quartz movement, a stainless steel case and bracelet, a sapphire crystal, and 1000M water resistance with helium escape valve for professional saturation dive capability. The Ratio 1038EF102V delivers accurate, low-maintenance timekeeping and extreme depth-rated durability in a serious professional diver design.
