Features: One Button Recording: With ezcap289 Lecture Capture, just press one button to record digital lesson contents or meeting presentations. Microphone: With integrated microphone, recording HD lecture combined with voice, you can synchronize the recorded image and the sound of the explanation in the recorded file. Noise Canceling: Noise canceling technology to effectively capture the teacher's voice and reduce irrelevant background noises for clear, pleasant audio. One Key Mute: If you need to play other audio recording process, you only need to press the mute button to keep video without recording, allows you no longer need to post-production separately. Easy to Share: Video and lecture speech will be stored in USB flash drive or mobile hard disk. No additional software will be installed. When the class is over, you can quickly share the files.