1. NOISE REDUCTION: The digital voice-activated recorder uses an 8-core DSP active noise reduction chip, providing clearer recordings. Lossless sampling of recordings. 2. VOICE-ACTIVATED RECORDING: The MP3 voice recorder automatically records when there is sound, saving storage space and also saving time for playback and filtering out unnecessary clips. 3. BUILT-IN TIME CHIP: The digital voice recorder has a built-in time chip, synchronized with the time. Recording files are named by time, making file management a breeze. 4. AUTOMATIC SAVE ON POWER FAILURE: When the system detects a power shortage, the file is automatically saved before the device shuts down to ensure recording data is not lost. 5. SCHEDULED AUTOMATIC RECORDING: Simply set the recording start and end times to achieve automatic recording. You can also set periodic recording (e.g., single, daily, etc.). Item Type: MP3 Voice Recorder Material: Zinc Alloy Recording Format: WAV Playback Format: MP3 WMA WAV Built-in Polymer Lithium Battery: 150mAh