... USB port USB Port 2600mAh Portable Power bank for Mobile phoneSandard This product is applied to digital communicate devices ... MAX)Nominal capacity2600Mah, 3.7V/10WHAdaptable forIpad/iphone/ipod/ Mobile phone/MP3/MP4/PSP/GPSSize20.3mm(diameter)Weight75gInput Charging Time3 ... fields, etc.Most of our products passed CE, UN38.3, MSDS. 2600mAh Portable Power bank for Iphone 4,all kinds of Mobile phone