... ISO approved 2)8000 hours 3)Base Type:E27 Full-Spiral Energy Saving Light More compact structure, cuter appearance High light output ... color rendering Dramatic energy saving and longer life Flicker free starting operation Ideal replacement of incandescent lamp 2U, 3U, 4U,6U tube are available ... , pendent lamps, supermarkets, restaurants, farms, hotels ,underwater etc. Full-Spiral Energy Saving Light