Feature:1. Voice Activated: Just turn on the voice control function, and if someone is talking nearby, the device will automatically record, and if the talking stops, the device will automatically save the file2. Hd Noise Reduction: Built in intelligent quad core noise reduction system, mini recorder reaches 192Kbps high bit rate, ADPCM recording, greatly reduce environmental noise, effectively restore human voice.3. File Encryption: The mini recorder has the encryption function to encrypt the recording file to ensure the safety of the recording file.4. MP3 Playback: Aside from recording, it has an MP3 playback feature, allowing you to listen to your favorite music or recordings conveniently.5. Compact and Portable: The super mini recorder is portable and you can easily carry it around in your pocket, purse, shirt pocket or key chain for everyday use.Specification:Item Type: Mini Voice RecorderModel Number: M2Material: Aluminum AlloyInterface: MicroRecording Format: WAVRecording Distance: Approx. 5m / 16.4ftMemory Recording Time: 90 hoursCapacity: 16GBBattery: 200mAh Rechargeable Lithium Battery(built-in).Package List:1 x Mini Voice Recorder 1 x Pair of Earphones1 x Data Cable1 x User Manual