The principle of the EP-3500 Mobile Power: 220V AC through adapter into DC5V voltage ... recharged built-in battery can be powered to the Iphone, mobile phones, digital cameras, MP3,, MP4 and digital products. ... IPHONE, Samsung V8, Nokia, Sony Ericsson V3), the instructions, a neutral box.Note:This product has internal protection circuit ... 240V electricity.2 Under sunshine for minutes 3500mA Mobile Charger