1.quick transfer data with usb port 2.sync data or charging 3.micro usb cable for iphone 3gs 4g 4s 4.fast delivery 5.OEM/ODM 2012 newest product,high qulity for iphone 4 aux audio data charger cable1.quick transfer data with usb port.high speed transfer steady2.sync data or charging3.micro usb cable for iphone 3g 3gs 4g 4s4.fast delivery5.OEM/ODM6.lenght:about 100 cm or 300 cm