Apple iPod shuffle 2 GB Green, Clamshell Package (2nd Generation) Includes - earbuds and USB dock. Battery Life - up to 12 Hours Stereo Minijack Connects to a PC or Mac via USB through the included dock Audio Support - MP3 (8 to 320 Kbps), MP3 VBR, AAC (8 to 320 Kbps), Protected AAC (from iTunes Store, M4A, M4B, M4P), Audible (formats 2, 3, & 4), WAV, and AIFF