The reading lamp is made of Section 7 battery 3(the match)Size: 14.8 x17.6 x1.5 cmMaterial: plasticReading lamp lens for synthetic resin， surface scratch is a normal phenomenon， buyers， please consider to be clear about to buy， if buy ~ as have already checked the informationTablet reading lamp， namely Lightwedge， is a kind of innovation design reading light， only light up all you have to read the page， the eye won't make the light point-blank or affect others