1. Lightweight and portable, does not take up your space 150 hours of continuous recording2. As thin as only 4mm3. Battery capacity: 750mAh4. HD noise reduction5. When there is sound, start recording, stop recording without sound, improve efficiency and save memory6. Comes with delete function, can be deleted on this machine7. Save automatically when power off8. Recording format: WAV9. Play format: MP3/WMA/WAV10. Charging time: about 3 hours11. 4G: can save 48 hours of recording files; 8G: can save 96 hours of recording files; 16G can save 192 hours of recording files; 32G can save 384 hours of recording files12. Product size: 86x54x4mm13. Product weight: about 33.2g