The Apple iPod Nano 4th Gen Model A1285 is a portable USB MP3 player with 8GB internal storage capacity. It has a black color and a headphone jack for audio output. The device supports MP4 and MP3 playable media formats and has a battery life of up to 5 hours. The iPod Nano 4th Gen is a part of the iPod product line and has USB 2.0 connectivity.