Apple A1285 iPod nano 16 GB Red - 4th Generation (MB917LL/A)
Battery Life Details: Digital playback - up to 24 hour(s) Video playback - up to 4 hour(s). iPod Generation: 4G. Supported Digital Audio Standards: WAV, AAC, AIFF, Audible, MP3, Apple Lossless. Sound Output Mode: Stereo.