... ), solar panel size: 5.5/250mA;(3), battery charger built-in high capacity rechargeable battery: 1100MA(4), output voltage: 5.5V ... the internal battery charging time: 5 hours;(8), the built-in solar battery charging time: 10 to 15 hours;(9), support ... SD MMC card, U disk MP3 decoder(10), radio, digital products, external speakers, support for mobile phone charging function ...