iRiver Volcano T7 4GB MP3 Player - White, T Series. Player media type: flash-media, Total storage capacity: 4 GB. Display: OLED, Display diagonal: 25.4 mm (1 "), Display resolution: 64 x 128 pixels. Audio formats supported: MP3, WMA. Frequency response: 20 - 20000 Hz, Signal-to-Noise Ratio (SNR): 90 dB, MP3 bit rates: 8Kbps - 320Kbps. FM band range: 76 - 108 MHz