for student,office,home,economic,E27,MAX40W Switch:ON/OFF in-line 1.E27,MAX40W 2.Certification:CE,ROHS and so on 3.Switch:ON/OFF in-line 4.high quality with competitive priceMetal table Lamp ,(Metal Lamp,desk lamp )Operating Voltage:110V/230VSwitch:ON/OFF in-lineE27,MAX40W QTY(PCS)20G.W. (KG)16.5N.W. (KG)21CTN (CM)77*32*46 student desk lamp