Digital Audio Recorder - Universal - Audio Recording 30 hours of continuous sound recording Tape Recorder Ballpoint Pen 32GB Noise Reduction MP3 Player Tape Recorder | Digital Sound Recorder (Black) Universal Highlights Audio Recording 30 hours of continuous sound recording Sound Recorder Ballpoint Pen 32GB Noise Reduction MP3 Player Sound Recorder | Digital Sound Recorder (Black) 30 Hours Audio Recording Continuous Recording Control Sound Voice Recorder Pen 32GB Ballpen Sound Summary MP3 Player MP3 Player | Digital Voice Recorder (Black) Product Name Digital Ballpen Shape Dating Record Sound Audio Record Pen Hidden USB Voice Recorder Pen Audio Recording 20 hours Continuous Recording SPY SOUND SOUND BLOP REDUCTION BALLPEN BLUS BLUS RECORD VOICE High Quality Recording 192kbps PCM Voice Recorder Use professional intelligent noise reduction chip to ensure high quality audio experience Long time continuous recording Built in 160mAh 30 hours lithium battery Continuous voice recording. Never missed a speech or lecture even High quality 360 degree and mutli recording Multi-angle and multi-direction recording, collect sound more clearly and high quality With time stamp function All recording with timestamp, easy to classify. Easy to use One-touch record and save design, but rewind function playback New Ballpen Sharpe mode design, USB storage, can write like a real pen, can store as USB MP3 player High sound quality,support MP3,WAV FORMAT.SUPPORTPORTPLABACK,REWIND,Next,Forward MP3 Play by line Control Synchronized recording Support recording by writing.Perfect gift for studying Parameter Recording rate 192kbps Recording time 30 hours continuous recording Recording format Wav Memory 32GB internal Playing format Wav/mp3/wma Battery voltage 3.7V Battery Rechargeable lithium battery 160mah Output 10mw+10mw (320Ohm) Interface USB 2.0 high speed Frequency 20hz to 29khz Material Alloy zinc Ratio noise & gt; 80 dB Distortion 0.05% Using temperature -5 to 40 System support Windows 2000, Mac OS 10.0, Android 4.0 above Pack 1xpen voice recorder (black 32GB)