1:Portable Charger Battery for iPhone 4S/4/3G/3GS ,Mobile phone 2: capacity :2800mAh 3:have CE,FCC,ROHS approved Portable Charger Battery for iPhone 4S/4/3G/3GS ,Mobile phone(Such ... LED indicator . 8:Power On /Off button to save battery when not in use . Compatible with: iphone 4,iPhone 3G/3GS, ,Cell phone , and MP3 ...