... 50Hz Color Temperature:2700/6400K Lifetime:more than 8000 4U lamp with high Luminous flux SH-D4U Saving energy 80%,have more ... perfomance, stable light beam, no flashing, protect your eyes,The outer casing adopts PBT plastic with fire-proof,high-temperature-proof and ... proof, Using the basic tricolor phosphor, the lamp tube is good at color-rendering with high light effect. Better energy-saving capacity ...