1. Meet an emergency: When you go to outside or power cut, you also can use your mobile phone with solar energy. 2. Convenience Whenever and wherever you are,you can charge your mobile phone in time,and you could talk With others when charging. 3. High efficiency Charging 60 minutes,the charger could transfer the energy from the build ing battery to your Mobile phone battery,and could talking 60~100minutes. 4. Environment protect save resource You can use solar energy to charge your mobile phone wherever and whenever. 5. Modem and portable Modem desingn,stainless steel case,small size,convenient to take it with you. 6. Safe use Over voltage protection for the circuit and your mobile phone smart charge safe use. specification: 1. High solar energy convert efficiency: over than 15% 2. Solar energy board: 4V/100mA 3. High capacity build ing Ni-MH battery: 1350mAh 4. Output voltage: 5.0~6.0V 5. Output current: 350~800mA 6. Charging time: about 60 minutes(the time is a little different for different mobile phone) 7. To charge the build in battery in the charger using solar energy: 10~15 hours. 8. To charge the build in battery in the charger using computer or AC adapter: about 4.5 hours. 9. The purple led work time when the build in battery is full: 142 hours 10. Dimension: 95*43*12MM weight: 74g