Digital Audio Recorder - Universal - Professional 16GB Mini Digital Audio Tape Recorder 20 Hours Recorder with Stand for Playing Sound and Speaker | Digital Tape Recorder Highlights Universal 16GB Mini Professional Digital Audio Tape Recorder 20 Hours Recorder with Stand for Sound Playback and Speaker | Digital Sound Recorder 16GB Digital Audio Voice Recorder Professional Mini 20 Hours Voice Recording Sound Stand Pen Holder with Speaker | digital voice recorder Features: Black color Material: metal Recording format: WAV Music format: WAV Playback formats: WAV, MP3 Power supply: Li-ion battery Recording time: 20 hours (fully charged) USB port: USB 2.0 Frequency Response: 20Hz-20kHz Working Temperature: 0~40 With Speakers: Yes Balanced: Yes Capacity: 16GB Compatible System: Windows XP, Window Vista, Windows 7, Windows 8 Item Size: 7 * 1.8 * 1.1cm / 2.7 * 0.7 * 0.4in Item weight: 34g / 1.2oz