•Backpack size (LxWxH): 34 x 24 x 50 cm
•Wider shoulder belt, 3 pcs solar panels
•Each solar panel size: 14 x 7 cm
•Solar power: 4.5V, 300 mA, 1.5W
•Charging output voltage: 5.4 - 5.8 V
•Charging output current: 200 - 400 mA
•2 pcs AA 1800 mAH Ni-MH rechargeable batteries
•It can charge mobile phone, MP3, CD player