Hidden HD Recording & Noise ReductionThe audio recorder has a HQ recording microphone with intelligent dynamic noise reduction, you can easily enjoy clear recording and playback. Professional recorder, adopting PCM digital noise reduction technology to achieve noise-free recording and 360 panoramic recording, providing you with a truly full, clear and natural sound [Voice Control & Long Battery Life] When the "Vor On" is turned on and a sound is detected, the voice control recording device will automatically start recording, which can avoid long-term silent recording, no sound without recording, saving recording time, storage space and power consumption One-button operation and time stampSlide on/off to record/save the recording, and the recording can be played through the wire-controlled earphone. Each recording is time-stamped, making finding the file on your computer quick and easy. Notice! ! ! : Connecting to a computer is a necessary condition for file management Start recording with the tap of a button. With its innocent look of an MP3 player, no one will suspect that you are a spy recording conversations in the room. When you're done, plug in your headphones or plug your device into your computer with the help of the provided cable, and you're ready to listen to your recording right away. It is very convenient to carry the key chain. spy recorder hide "32GB Spy Digital Voice Recorder & Mini Size" mini portable voice recorder is equipped with 32GB internal memory, enough space for 40 hours of continuous recording, and can store up to 350 hours of recording files. It supports WAV format. It can be used as a professional MP3 player and keychain. The special portable design allows you to carry it anywhere conveniently.