Graham watch silverstone rs endurance orange 2stcbb04a racing beauty there is no better place than a race circuit to talk about endurance the manly tri compax silverstone rs endurance 12hr chronograph is the top speed wrist machine designed for gentlemen drivers performance and thrill guaranteed the tri compax chronograph knows what racing is all about the black smoked openwork dial features a 12hr minutes and automobile brake disc shaped second counter the shiny ceramic bezel with its