... ,Flexible high efficiency solar panel. 3,CE,ROHS report. 4,speaker speaker backpack Solar panelpower:2Wpacking Outer Carton(CM) :44*33*55Output ... Output current: 450MaImpedance: 2x2ΩStereo system of speakerOutput power of speaker: 2wWith outside amplifierSpeaker with solar cellAmplifier size: 90mmAccessory:V3+2 ...