1. Smart VoiceActivated Recording and Dual Modes The recorder automatically starts recording when it detects sound and pauses when it is silent, saving storage space and battery life while improving work efficiency. It can be used in either oneclick mode or voicecontrol mode to suit different scenarios. 2. HD Noise Reduction for Crystal Clear Playback Equipped with a professionalgrade noise reduction chip that effectively filters out background interference. This provides higher fidelity and clearer recording quality in crowded conference rooms or busy classrooms, ensuring every word is captured accurately. 3. Builtin Timestamp for Easy Management The builtin time chip synchronizes with your computer and Beijing time. Each recording file is marked with a precise timestamp, making it easy to sort, locate specific moments, and enhance the credibility of your audio records. 4. 20Hour Continuous Recording and Quality Audio Capture details for up to 20 hours on a single charge. With a 48 kHz sampling rate and 192 kbps bitrate, it supports WAV recording format and MP3/WMA/WAV playback, delivering professionallevel audio quality for long lectures or multiday events.