The polished blue bi-directional rotating bezel is compelete using a vibrant orange GMT scale and helium-escape valve at 10 o'clock on the case. Its outstanding bright blue glow is richer and more time-Long lasting compared to the green glow of Tremendous-LumiNova. OMEGA has unrivalled knowledge in the use of ceramics, https://www.watchesworld.com/top-10-dive-watches/