Bremont watch supermarine 500 black green s500bk gn the supermarine 500 is bremonts first marine watch nick and giles english wanted to build an amphibious watch that was both classical in its design and aviation roots but very effective as a diving watch the design of the supermarine has been built using bremonts unique trip tick three piece case construction which gives it a water resistance depth of 500m or 1660ft but keeps the classic curved profile of the 42mm case design which is so d