Sherpa "OPS" 40mm Stainless Steel w/ DLC Coating (Pre-Order)With its satin finished dark anthracite watch case, the OPS is the rebirth of a model that was favorited by several Navy Forces in the 1960s. The elegantly domed sapphire box glass with internal anti reflex coating adds to the sleek appearance on the wrist, which enables the rugged tool watch to be worn on any occasion. This watch features true "Super Compressor" crown construction that allows for the seals to further tighten as the watch experiences