SK-012 4GB USB Dictaphone Digital Audio Voice Recorder with WAV MP3 Player VAR Function(Black) Features 1. Built-in 250mAh battery, use time 25h. 2. One-key recording, with LCD recording indicator, easy to operate. 3. 6 recording modes, 3D sound effects, support voice activation function (VAR). 4. Support loopA-B repeatpausedelete. Equipped with a telephone adapter to support telephone conversation recording. 5. Small pocket size, good as MP3 music player. 6. Built-in microphone and speaker, with external microphone and earphone. Specification 1. Recording format: WAV format 2. Recording power: 0.8mA-12mA 3. Recording sampling rate: 8KHz16KHz48KHz 4. Recording bit rate: WAV (32128192384Kbps) 5. Music playback format: MP3, WAV 6. Headphone jack: 3.5pie stereo jack 7. Headphone output: (L) 9mW???(R) 9mW (32Ohm) max 8. USB interface: MICRO-Mike 5PDC5V-300MAh 9. Storage: Embedded Flash 10. Built-in speaker output: 800mW 11. Built-in speaker: 8R0.5W diameter 26 12. Built-in MIC: Omni-directional capacitor MIC 13. Display: 1.0 inches 14. Distortion: 90dB 15. Signal to noise ratio: 0.06% 16. Operating temperature: -10 to 40 degrees Celsius 17. Body weight: 32.5g (bare metal) 18. Body size: 85mm??36mm??14mm 19. Power supply mode: lithium battery3.2-4.2V 20. Battery type: LiCoO2 21. Battery capacity: 250MAh 22. Battery weight (g): 4g 23. Watt hours per battery: 0.81wh 24. Lithium content: 0.066g 25. Battery size: 3.5mm x 14mm x 55mm 26. Battery life: about 30 hours of recording, about 6 hours of playback (plug in headphones) 27. Support system: Windows XP&Vista2KME98 (driver installation required) Mac OS 10 Package list Recorder x 1 Headphone x 1 Microphone x 1 USB cable x 1 Telephone adapter x 1 Telephone line cable x 1 Audio cable x 1 User Manual (English) x 1