Ratio 2nd Generation Free Diver Helium-Safe Quartz 1038EF102V-BLU-V02 1000M Men's WatchBig, bright and burly, the Ratio 2nd Generation Free Diver Helium-Safe Quartz is a direct contender to all the BIG divers out there, who offer their marvels at prices that shock! The Ratio 2nd Generation Free Diver Helium-Safe Quartz is solidly built in stainless steel; its crown guarded from all directions by two solid blocks of steel and its unidirectional bezel can handle any impact head-on!