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