1. ABS material, UV process, high concealment 2. One-button recording, USB cable transmission and control, with delete function, LED light indicator 3. ADPCM recording 192Kbit, optional voice-activated recording 50DB. Automatic split recording, loop overlay recording. 4. Continuous recording for 80 hours, standby for 200 days. 8GB memory can store recordings for 90 hours. 5. Support MP3, WMA, WAV playback, support fast forward and backward playback. 6. With time stamp, the recording file is named after time. 7. Battery capacity: 550mAh 8. Size: 58x43x16mm 9. Net weight: 20g