Capacity	1GB Up to 240 songs 2GB Up to 500 songs		8GB Up to 2,000 songs, up to 8 hours of video, or some of each 16GB Up to 4,000 songs, up to 16 hours of video, or some of each		120GB Up to 30,000 songs, up 150 hours of video, or some of each		8GB Up to 1,750 songs, up to 10 hours of video, or some of each 16GB Up to 3,500 songs, up to 20 hours of video, or some of each 32GB Up to 7,000 songs, up to 40 hours of video, or some of each
Battery Life	Up to 12 hours of audio		Up to 24 hours of audio Up to 4 hours of video		Up to 36 hours of audio Up to 6 hours of video		Up to 36 hours of audio Up to 6 hours of video
Includes	Earphones, USB dock		Earphones, dock adapter, USB 2.0 cable		Earphones, dock adapter, USB 2.0 cable		Earphones, dock adapter, USB 2.0 cable