Portable Recording Studio - Universal - 1 Voice Activated Digital Audio Tape Recorder Mini USB Pen 8GB MP3 Player for Recording Long Hold Lectures | Digital Tape Recorder(Black) Highlights Universal 1 Digital Audio Tape Recorder Voice Activated Mini USB Pen 8GB MP3 Player for Recording Long Hold Lectures | Digital Tape Recorder(Black) 1 pcs Mini USB Digital Audio Voice Recorder Mini USB Pen 8GB Long Term MP3 Player Recording for Meeting Conferences | Digital voice recorder Features: Black color Material: ABS Recording distance: 5m Sampling rate: 48kHz Battery: eco-friendly polymer lithium cell, 3.7V Battery capacity: no Charging time: approx. 12 hours (full charge will show blue light) Recording time: 500HR continuous recording Memory capacity: 8GB Recording bit rate: 192kbps Recording format: WAV Playing model: MP3/WMA/ WAV Frequency Response: 20Hz-20kHz Supported OS: Windows98/Me/2K/XP/Win7/8/10/Linux6.2/Mac OS 10 Item Size: 7.0*2.1*2.8cm/ 2.8*0.8*1.1in