ITEM NAME:6V 4.2W Solar Panel Charger Polycrystalline Solar Cell Solar Mobile Charger I8D4 6V 4.2W Solar Panel Charger Polycrystalline Solar Cell Solar Mobile Charger I8D4 Name: 6V4.2W Solar Panel Charger Operating voltage: 6V Current: 0-700MA(MAX) Output: USB2.0 Usage: for mobile phones, MP3, MP4 and other products charger under standard test.Material: Polycrystalline Silicon. colour: black. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. Component test temperature of 25 degree.