Cowon E2 4 GB. Player media type: flash-media, Total storage capacity: 4 GB. Audio formats supported: MP3, MP2, WMA, FLAC, OGG, APE, WAV. Headphone connectivity: 3.5 mm. Frequency response: 20 - 20000 Hz, Signal-to-Noise Ratio (SNR): 95 dB. Line-out connectivity: 3.5 mm