The polished blue bi-directional rotating bezel is compelete with a shiny orange GMT scale and helium-escape valve at 10 o'clock on the case. Its amazing vibrant blue glow is richer and lengthier-Long lasting compared to the environmentally friendly glow of Tremendous-LumiNova. Clear caseback Transparent caseback A transparent caseback - routinely https://www.watchesworld.com/top-10-dive-watches/