1: solar bag:Backpack size (LxWxH): 43*35*14(cm)Solar panel: 1 pcSolar power:  includes a 500mAh NI-MHbattery pack output voltage(max): DC5.8V  7.8Voutput current(max): 500 mAH2: Introduction of this solar system: The solar bags are mobile power generators, designed to charge your devices without tying you to a power outlet, which makes them ideal for traveling and camping.It combines by four parts: bag + solar cell panel + battery box + adapters Solar bag can recharge most small electronic devices including: cell phones, cameras, , PDA''s, GPS, PSP games player, MP3s and even laptops. the bags come with a set of standard adapters for common cell phones and other devices. We also offer a full range of optional adapters. Included with each bag is a Li Ion battery pack which stores any surplus power generated, so it is available when you need it ?C not just when the sun is up. The battery pack can also be charged using an AC travel charger or car charger(both included