1536Kbps Dual Microphones and PCM Clear Recording: The digital recorder is equipped with dual sensitive microphones and dynamic DSP noise reduction technology, supporting up to 1536Kbps PCM recording for excellent crystal clear sound.330 Days Storage: It can store up to 8000 hours or 330 days of recording time at 32kbps, allowing you to record freely without worrying about running out of memory.80 Hours Super Long Recording and 1100mAh Powerful Battery: After fully charged via USB Type-C interface, the long battery life recorder can maintain up to 80 hours of continuous recording.Simple and Powerful Easy to understand: Slide the recording button up: start recording; slide down: save recording. This metal case recorder with playback function also has the following functions: password, timed recording, line input.Voice Activated Recorder: Turn on the AVR voice activation function to record only when speaking, reduce silence and whispering clips, save memory and power. Easily record your meetings, interviews, speeches, classes, lectures.Variable Speed Playback and A-B Repeat: Language learners can adjust the playback speed of the recording to hear the pronunciation and intonation of each word. The "A-B Repeat" feature allows for repeated listening of a specific sentence or paragraph, which helps to better understand and learn a foreign language.