DVR-308A The 100 meter long distance radio recorder continuously recorded for 350 hours

Function overview
1. Wireless recording remotely
2. Super long time continuous recording 
3. One button recording& playing
4. Four recording modes:
    LP: Long-time recording
    SP: Standard recording
    HP: High quality recording
    Wireless recording
5. Voice Activated Recording (VOR/VAR)
6. Listening  while recording
7. Time setting
8. FM radio: Frequency  response 87.0-108MHz
9. Automatic section-break
10. A-B repeat
11. Mp3 player
12. Intelligent power monitoring
13. With built-in high power loudspeaker
14. With built-in high capacity polymer battery

More :

Size:110mm*35mm*13.5mm    
Weight:57g
Power supply:polymer battery 3.7V  1500mAh,super long time continuous recording
Memory capacity:4GB-16GB
Recording bit rate:ADPCM,32Kbps/128Kbps/192Kbps
4GB recording time:LP about 283 hours/SP about 70 hours/HP about 47 hours
8GB recording time:LP about 555 hours/SP about 138 hours/HP about 92 hours
16GB recording time:LP about 1110 hours/SP about277 hours/HP about 185 hours
Support system:Windows2000/XP/Vista/7/8
Music format : MP3/WMA