64GB Large Capacity & Sturdy Case 64 GB voice recorder has enough space for 23 hours continuous recording and stores up to 750 hour recordings file of WAV formats. With it you can record any audio you want without worrying about running out of memory. It can also be used as an MP3 player and USB memory. One Key Recording & Easy PlaybackJust slide the recorder to ON/OFF to start/save recording. With no other devices connected, the voice recorder is recording as long as it is on, and you don't have to worry about being interrupted by incoming calls or other applications as you would with phone recording. Insert the included headphones and turn on recorder can quickly playback the recordings, as well as support pause, fast forward/rewind Noise Reduction & Voice ActivatedBuilt-in noise reduction chip, the audio recorder can restore the sound of real scenes to a greater extent. As well as comes with voice activation function (default OFF), after enabling voice activation according to the manual, the digital recorder will automatically ignore low decibel sounds. Wide Compatibility & Low Power Auto Save voice recorders can connect to Windows/MAC/Android phone to playback, delete, backup files named after recording date. This audio recorder will automatically save the recording file before low battery shutdown and there will be a red light flashing to remind, you don't have to be afraid of accidental file loss!