Features: 1) Super bright LED bulb: provide powerful reading light 2) Button cell battery: 3 x AG13 (included) 3) Push-button robotics: arm activates at touch of a button 4) Jumbo clip secures light to book jacket or magazineInner packing:1pc/boxOuter packing:200pcs/box N.W.: 7kg G.W.: 7.5kg