... convenient to use, simple and elegant appearance; 2.Low power consumption Single-sided or/and double sided,energy-saving light box/ advertising ... are among our best selling.1, Snap open aluminium frame, single/double sided, its fashion, easy to change picture and convenient ... longevity of lighting tubes or/and LED light20000 hours with tube lamp light , 50000 hour with LED light8,Voltage:120V--240V9 ...