iRiver E150 4GB, E Series. Player media type: flash-media, Total storage capacity: 4 GB, Compatible memory cards: Micro SD. Display: LCD, Display diagonal: 61 mm (2.4 "). Video formats supported: WMV9 SP, Image formats supported: BMP, GIF, JPEG, PNG. Frequency response: 20 - 20000 Hz, MP3 bit rates: 8Kbps - 320Kbps, WMA bit rates: 8 - 320 Kbit/s. FM band range: 87.5 - 108 MHz