[Dual-Core Processor Noise Reduction] The digital recording pen uses a professional DSP acoustic processor with a built-in intelligent noise reduction chip to directly filter surrounding noise and capture the recording content accurately and clearly. 3 Ultra-Sensitive MicrophonesThis recorder has a maximum sound sampling rate of 1536Kbps and supports recording distances up to 44 feet. Excellent audio recorder for lectures, meetings, interviews, courses, conversations and concerts with ultra-sensitive microphone. Voice-activated recordingRecording can be started by voice, and the silent part can be omitted to save storage space. You can use headphones to listen to sounds while recording, and the recorder also acts as a hearing aid. Powerful and Easy to OperateThe digital voice recorder supports MP3 and WAV format files and can be easily transferred to MAC or PC. Recording files are saved with timestamps; switch between recording, saving, and deletion with one click. The recorder adopts a solid metal casing, which is lightweight and easy to carry.