1.Most gorgeous appearance，make your mobile phone never power off！2.Provide different connecters，can charge NOK、SAM、MOT、SON/ERI、IPHONE、Blackberry,etc 3.Extend working time for Mobile(talk):4hours, MP3(audio):20hours, MP4(Video):3hours 4.package(can be hung on and stand up on the shelf ) Specifications：1 Built-in li-ion battery：3.7V 2000mAh；2 Output：5.5V 1000m