portable backpack solar charger*Solar cell panel:1.8W/2.5W/3W/3.5W/3.6W/5W/6W/7W/10W/ 10.5W/13W/14W/18W/20W/21W/24W/28W/30W/ 36W/40W/60W/80W/100W/120W *Solar photovoltaic conversion efficiency : >17% *Output voltage / current: 5.5V/18V *Outport:320mah - 6700mah*Material:PET laminated , PVC waterproof fabric *Application: Notebooks/Mini Fan/Mobile phone/PDA/MP3/ MP4/digitalcamera/video camera/PSP video games/ DVD/ iPhone/ Blackberry/bluetooth headset/IPOD digital products portable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar chargerSelling points & Terms1. Solar panel Type is poly-crystalline silicon, the most efficient solar panel on the market.2. Small and Compact; folded up it is about the size of a bag. It can open up and charge from your dashboard or backpack. Really just throw it out wherever you may be.3. Convenient Pocket, Convenient pouch pocket on the back of the panel to store accessories.More picturesportable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar charger portable backpack solar chargermore details Packing Pictures: Factory photo