The polished blue bi-directional rotating bezel is compelete with a shiny orange GMT scale and helium-escape valve at ten o'clock on the case. Its good shiny blue glow is richer and for a longer time-lasting as compared to the inexperienced glow of Super-LumiNova. Unidirectional rotating bezel Unidirectional rotating bezel A https://www.watchesworld.com/top-10-dive-watches/