The Navy SEAL Steel RSC series is manufactured using three materials: Rubber, Steel and CARBONOX (RSC). A 316L Stainless steel iconic turtle shape case is designed to protect the crown. A CARBONOX uni-directional rotating bezel is a divers essential and a double security gasket further ensures water resistance and overall performance. This rugged design takes on a sleek aesthetic in all-black. Paired with our famous Light Technology, the dial is readable, even in the darkest night.