Universal external battery for various digital products as iPhone/iPod/ Mobile Phone/ ... , LED light function and power indicator.with 7 adaptors for use of iphone,nokia, samsuna, sony ericsson, mini ... Input: DC5V-0.5-1A Output: DC5V-1.A Battery Type: Li-ion Capacity: 4200mAh Weight: 120g power status ... power bank/ rechargable power supply/Universal external battery 4200 mAh for mobile digital products