Password ProtectionWorry about the safety of your crucial recordings? Your recorder device safeguards your recording files with a 6-digit power-on password. No one can turn on your digital recorder without password, feel relieved to use it to record important or private content.Superior Audio QualityThe voice recorder with playback delivers exceptional sound quality with support for 1536kbps (WAV format). It actively reduces unwanted background noise and provides recording gain adjustment, ensuring your recordings are pristine and clear3 Way to Record1)Activate the voice-activated mode to start recording when sound is detected and pause when it's silent. This feature minimizes empty segments, saving memory, power and the time to listen to it. 2) 3)Use line-in cord(included) to record online sound.Long Recording Time & Ample Storage SpaceThe tape voice recorder can record for a continuous 30 hours once fully charged. Ideal for long recording sessions. Never fear losing your recordings due to a depleted battery, as they are automatically saved on shutdown. With a spacious 64GB memory, you can store up to 20,000 songs. Ample Storage Space.Powerful Features for Effortless Recording1) Recording Monitoring: Plug in the supplied earphones, you can hear the input sound of the recorder in real time by headphone to ensure that the input recording sound quality is good. 2) A-B Repeat: Select specific segments of audio content you want to hear, then you can repeat play quickly again and again. 3)The voice recorder can be used to speed up or slow down the speaker.