1. Music Format: MP3, WMA 2. MP3/WMA bit rate: 64K bps - 320K bps 3. FM transmitter frequency: 88.0-108.0 MHz; effective range: within 10m 4. Languages Voice Recognition: English, accuracy above 97%. 5. Support Voice Record & Replay. 6. 6 EQ modes: Normal, Rock, Jazz, Classical, POP, Bass 7. 4 Repeat models: Normal, repeat one, repeat all, random 8. Display Screen: 1.0' Lattice (128?4) 2 color OLED 9. Internal Memory: Flash 1GB 10. PC connection: USB2.0 full speed 11. Max Earphone output: (L) 10mW + (R) 10mW (32 Ohm) 12. Frequency Response: 20Hz - 20 KHz 13. S/N ratio: 95dB 14. Power Supply: One 900mAh detachable rechargeable lithium battery, Max lasting 8 hours. 15. Working Temperature: -5 to 40℃ 16. Operating System Supported: WindowsME/2000/XP