The voice recorder built-in 32GB storage capacity, enough storage for up to 750 hours files. And real-time playback with earphone. Compatible with WIN/MAC, you can easily transfer files to your computer with the included USB cable. The recording time is up to 20 hours per full charge, and it can automatically save the recording file before the battery is low. Fully charged within 2 hours with a Android charging cable.High quality recording with noise redution, you will get super clear recorded voice, the sensitive microphone help you to catch speaker's words clear, perfect voice recorder for interview, lectures, meetings and so on.Press the round button for 3 seconds, the red light flashes 3 times to start recording, the light flashes 3 times to turn off. Press to pause or continue during recording. Press the power-on button for 2 times and the blue light is always on to enter the play waiting, then press any button to play or pause. You can adjust the volume with the “+“and “-”buttons. You can use as an MP3/music player, you could enjoy the music after your tired study, meeting and so on.This recorder is easy to carry and doesn't take up much space in your bag. Each recording is named with a time stamp, allowing you to find the file on your computer quickly and easily. Note: File management requires a connection to your computer.