Ali-in-one Designed External Portable Battery

We are offering ali-in-one designed external portable battery for smartphone.
the built-in usb designed external portable for iphone and ipod is a new addition to wopower's product faimly. Designed with built-in usb connector, you will easily carry it out when you are in the car, in the office, in the coffe shop or camping. Not only charge your phones easily, but also you don't need a usb cable to charge and sync. Supercharge your iphone/ipod with the external portable battery from wopower from now on. Stay powered, stay connected and carry it convenient.
benefits:
standby time:up to 361 hours
3g talk time: up to 8 hours
2g talk time: up to 17 hours
3g internet use: up to 7 hours
wifi use: up to 12 hours
vedio playback: up to 12 hours
audio playback: up to 48 hours