Features: 1) Sigmatel STMP 35xx solution 2) Built-in flash memory 3) MP3/ WMA music file playback 4) Encoding function 5) Voice recording with one key, clear voice quality 6) FM tuner with 20 preset stations 7) Two-color transparent OLED display 8) High speed USB 2.0 9) Built-in stopwatch 10) Display of lyrics synchronously with playback of songs 11) Low power consumption, 9 hours of continuous playback 12) 6-band EQ modes (pop / classic / jazz / rock / normal / user) 13) Consecutive file playback when power supply turned back on 14) Aluminum alloy shell Specifications: 1) Capacity: up to 1GB 2) Display: 128 x 64 pixels OLED 3) Power supply: built-in chargeable lithium battery 4) Power supply working time: approximate 9 hours 5) Earphone output power: 7mW x 2/32 ohms 6) Output frequency: 20-20kHz 7) The ratio of signal to noise: ≥80dB 8) File playback format: MP3, WMA 9) Voice recording format: WAV 10) Display character assemble: GB2312 11) Coding rate: MP3: MPEG 1.0 layer 3 32K-320Kbps; WMA: 64K-256Kbps 12) File system: FAT32 13) Working temperature: -5癈 ~ 40癈 14) Interface type: mini USB 15) Dimension: 70 x 35 x 13mm 16) Net weight: 40g