1) Safe, high effective, saving energy, rational structure, easy to install, beautiful and natural 2) Rapid start at low voltage, no noise, no flicker, service life is 10.000 hours above 3) Of soft and uniform light, fully milky white of the lamp body which uses qualified steel plate by way of plasticized processing 4) Voltage: 220V 5) Frequency: 50Hz 6) For use in house, office, working room, school room ,factory and other places Outer packing: 12pcs/ctn