Apple 16GB iPod nano, iPod nano. Player media type: flash-media, Total storage capacity: 16 GB. Display: LCD, Display diagonal: 39.1 mm (1.54 "), Display resolution: 240 x 240 pixels. Audio formats supported: AAC, MP3, WAV. Headphone connectivity: 3.5 mm, Headphone frequency: 20 - 20000 Hz. Frequency response: 20 - 20000 Hz