Mini portable size: This recorder is designed to be small and light, which is easy to carry and record sound without attracting any attention.Simple operation: It is very simple to use, just a switch can be operated, move the switch to the correct position to start the voice control mode, move it to the middle position, the system will stop and save the file and then power off, move it to the left position, it will Continue recording and save a file every 60 minutes.Voice control mode: turn the switch to the appropriate position, the red LED light flashes 6 times and then goes out, the system enters the voice control mode, only the audible sound is detected to capture, reduce whispers, save space, eliminate silent channels and save power and storage space.Easy Read on Computer: Simple plug-and-play function for file transfer, no need to install on the computer. And you can use a large-capacity memory card to easily store a large number of recording files.Noise reduction technology: Built-in AGC noise reduction technology automatic gain module to adjust the focal length of the sound source, integrated digital signal processing (DSP) technology to remove false noise and amplify the target sound.