1、[Zoom Microphone]: The digital voice recorder comes with auto zoom microphone system that automatically adjusts to the distance that suitable for capturing sound sources to ensure better recording results. 2、[Silent Recording]: The voice activated recorder does not have any sound, light flicker or vibrate in the whole process of recording, and can be used in special circumstances such as obtaining evidence. 3、[Simple Operation]: The operation method of the MP3 recorder is very simple, the operation steps are clear, and the recording can be quickly opened at anytime and anywhere. 4、[Saving Space]: The sound recording device will record when there is sound, and will pause automatically when there is no sound, which can effectively save storage space. 5、[Built in Timestamp]: The sound recorder has a built in clock chip to find the exact time of meetings, interviews, dialogues, etc, and after synchronizing with the computer, the recording files will be named by time. Item Type: Digital Voice Recorder Material: ABS Recording Format: WAV Playback Format: MP3, WMA, WAV Built in Polymer Lithium Battery: 550mAh 1 x Digital Voice Recorder 1 x Earphones 1 x Charging Cable 1 x User Manual