Solar panel (polycrystalline silicon): 5.5V at 100mAh;
USB charging cable: 5V at 500mAh;
Constant voltage: 4.2V (to protect internal battery);

Li-ion battery: 5.5V at 2,000mAh;
Output: 5.5V at 500mAh 

Indication: charging with LED bar, discharging with warning for low-battery blinking LED for operating;

Available for mobile phones, PDAs, MP3, MP4 and Apple's iPods;