... Frequency: 50/60Hz Optional base: E27/B22/E14 Optional Color Temperature: 2,700K/4,100K/6,500K 100% Tri ... compact structure, cuter appearance High light output and excellent color rendering Dramatic energy saving and longer life Flicker free starting operation ... , pendent lamps, supermarkets, restaurants, shops, hotels etc. 100% tri-color material 8000h lifespan energy saving light bulb