1, Voltage: 110v-140v/220v-240v 50Hz/60Hz 2, Power: 7w, 9w, 11w, 13w, 15w, 18w, 20w, 21w, 25w, 26w 3, Base: E27/B22 4, Color Temperature: 2700k/6400k 5, Tube Diameter: T2, T3, T4 6, Shape: Half Spiral 7, PF: 0.5 8, Luminous Effiency: >60lm/w ...Read More