High Quality Clear Recording: This recorder adopts upgraded noise reduction microphone and professional recording chip. It can capture high quality sound at 1536Kbps, just like the speaker is standing right next to you. You can also turn on the monitor function to listen to the recording of the recorder device in real time. It is the best choice for people who record and store lectures, meetings, classes and interviews, etc.64GB Large Memory: The 64 GB digital recorder has a lot of memory and storage space, and can continuously record up to 280 hours at 512 kbps. The built-in rechargeable battery can support up to 25 hours of continuous recording (512kbps non-noise reduction mode), and the recording format can be preset to mp3 32kbps, 128kbps or wav 1536kbps, and the new recorder device defaults to 512kbps wav recording.Voice Activated Recorder: This portable recorder allows you to set the voice decibel level to 7 different levels. When the voice control function is turned on, the recorder automatically starts recording only when the sound reaches the correct voice decibel level, reducing gaps and whispered phrases, saving storage space and listening time. It also has friendly prompts and automatic saving of recording files (in case of low battery), A-B repeat.Variable playback speed: The variable speed range is from -7 to 7, with a total of 15 levels to adjust the playback speed (only supports MP3 format). Fast playback quickly jumps to the playback point you want and saves waiting time; slow playback clearly hears every word you want.Password protection: You can set a 4-digit password, without which no one can open the recorder and listen to your recording files. Ensure that your valuable data is best protected. Even if you forget the password, it doesn't matter, the super password can help you reset the password.