Function Instruction: Single H tricolor fluoresent tube Free-frequency converting eletronic ballast Adjustable lamp arm Classical shape design Used in lamp with clip and desk lamp Input voltage/Frequency/Power:AC110/230-50/60HZ-11W Life time:10000hrs Main material:ABS Color:black,sliver Packing Instuction: Inner packing:1pcs/gift box Gift box dimension:14.3*0.85*42.4(cm) Outer packing:20pcs/carton Carton dimension:84*30*44.5(cm) N.W.:0.85kgs/pcs,20kgs/20pcs