Backpack size (LxWxH): 33*21*47cm Fabric: 600D polyester, Wider shoulder belt 1 piece solar panel, Panel size: 140mm*95mm Solar power: 6V, 225 mA, 1.35W Includes a 1,200mAhNi-MH battery pack output voltage(max): DC5.8V output current(max): 400 mA