... , business wind, functional 3.certification:CE,FCC,RoHS Ultra slim dimension Mobile Power for iphone 4/4S Mobile Power for iphone ... .2000mAh Battery.2.Fully enclosed protective case.3.Ultra slim dimension!4.Protective circuit for over charging,over using and short ... ,Purple,Brown,YellowCell type: Li-polymer batteryPicture show: Ultra slim dimension Mobile Power for iphone 4/4S