APC Mobile Power Pack, 3400mAh , Lithium-Ion, All-in-One Charging Solution, Black - For USB Device, Camera, Smartphone, Tablet PC, Mobile Phone, Audio Player, Handheld Gaming Console, e-book Reader - Lithium Ion (Li-Ion) - 3400 mAh - 5 V DC Output - 120 V AC, 230 V AC Input - Black