Universal external battery for various digital products as iPhone/iPod/ Mobile Phone/ MP3/ MP4/PSP ... communicate and digital devices like mobile, ipad,iphone,ipod,MP3,MP4,PSP,Digital camera etc.with ... : DC5V-0.5-1A Output: DC5V-1.A Battery Type: Li-ion Capacity: 4200mAh Weight: 120g power ... portable power bank/ rechargable power supply/Universal external battery 4200 mAh for mobile digital products