Apple iPod nano 16GB 6th Generation (Green ) Discontinued Model (In Plain White Box) 16 GB Storage Capacity (Estimated Free Space 12.5 GB) for about 4,000 songs Up to 24 hours of audio playback on a single charge 1.54-inch (diagonal) color TFT display with 240-by-240-pixel resolution (220 pixels per inch) Support for AAC, Protected AAC (iTunes Store), MP3, MP3 VBR, Audible, Apple Lossless, AIFF, and WAV audio formats One-year limited warranty