Portable Recording Studio - Universal - Professional 32GB Mini Digital Portable Stereo Tape Recorder for MP3 Player | Digital Tape Recorder(Black) Highlights Universal 32GB Mini Digital Professional Portable Stereo Tape Recorder for MP3 Player | Digital Tape Recorder(Black) 32GB Digital Voice Recorder Professional Stereo Stereo Mini Digital Business Recorder with Mp3 Player | digital voice recorder 32GB Digital Voice Recorder Professional Portable Stereo Mini Digital Stereo For Business with MP3 Player Details: Memory Capacity: 32GB Display: 128 x 64lattice screen Midea Storage: Built-in Flash MIC: omni-directional microphone External Input: Earphone stereo: 3.5mm stereo jack Microphone: 3.5mm stereo jack USB cable: USB 1.1 / USB2.0 PC interface Recording format: MP3 Supported music file: MP3 / WMA Record time: HQ ( 128Kbps): 7680mins SP (64Kbps): 16920mins LP (32Kbps): 33120mins Frequency: 20Hz-20kHz Max Output: 300mw S/N (Ratio): 80dB Extenal: 20mm dynamic range, 16ohm Playback: up to 13 hours Support USB System : Windows 2000 and above, not for Mac.os system. (Not for win 8) Operating temperature: 0CentiGrade~60CentiGrade Battery (full charge): Recording: up to 20 hours Playback: up to 13 hours