... rated output: 5 V-5.2 V / 1000Shenzhen Portable Mobile Power Bank 4000mAhTechnology parametersAppearance size: 115 * 58 * 15 mmHeavy quantity ... Samsung, Molorola, Nokia, SonyEricsson, HTC, iPhone and Mini-USB joint, Micro-USB joint, PSP joint) lithium polymer high performance core, capacity ... the trouble of equipment have no electricity! portable power source from external battery mobilephone charger