Philips SA3021C 2GB* Flash audio video player. Display: LCD, Display diagonal: 38.1 mm (1.5 "), ID3 Tag display: Song title, artist, album. Audio formats supported: WAV MP3 WMA, Image formats supported: JPEG. Frequency response: 80 - 18 Hz, Signal-to-Noise Ratio (SNR): 80 dB, Total Harmonic Distortion (THD): 1 %. Voice recording: ADPCM, Built-in microphone: mono. Rechargeable: Yes, via USB, Battery capacity: 310 mAh