product 1. 1.5 inch LCD screen2. Memory: 8gb/16g/32g optional3. Recording format: MP3, WAV4. Recording bit rate: 192Kbps(SP)/1536kbps(HQ) optional5. Support voice-activated recording (VOR)6. A folder or B folder can be created to save the recorded files7. Music playback, support music formats MP3/WMA/WAV/FLAC/APE8. Support A-B segment repeat playback9. Fast forward/rewind recording playback and music playback10. Built-in high-quality speakers.11. Can record through built-in dual microphones or external microphones.12. Telephone recording box13. Can be used as a USB flash drive14. You can change the time15. Recording time: PCM recording 22Hr/ SHQ recording 136Hr/ HQ recording 186Hr/ LP recording 276Hr16. Recording time: 40 hours17. Playing time: 25 hours18. Frequency response: 20 hz ~ 20 khz19. Sound to noise ratio: 80db20. Maximum output power: 10mw(L) + 10mw(R)21. Support system: Windows 2000 / XP / 7 / Vista / 8 / iOS22. :3.7V, 220mAh , rechargeable lithium battery23. When the battery power is low, automatically save the record file