*,No need to change the battery *3*LED G High luminance *High quality speaker *Hand power generation flashlight *FM radio flashlight, outdoor, camping ... generators, rectifier, voltage stabilizing, lithium batteries for built-in, make the radio work, LED shine. · product size (cm) : 17.7 x8.4 ... x8.6 cm outside the box sizes: 57.5 x39.5 x41CM · packing number: PCS ...