Portable Recording Studio - Universal - 16GB Digital Audio Tape Recorder Voice Activated Mini USB Pen MP3 Player Playback | Digital Sound Recorder(The Black) Universal Highlights Digital Audio Sound Recorder 16GB Voice Activated Mini USB Pen MP3 Player Playback | Digital Tape Recorder(Black) 16GB Digital Audio Voice Recorder Enabled Mini USB SEN MP3 Player Recording for Conferences | Digital Voice Recorder Specification: Recording Format: WAV. The color black. Built-in memory: 16GB Body material: ABS. Recording time: 40 days continuous recording. Max. Recording Time: 1000 hours (16GB). Recording method: one button recording. Distance: 40M. Microphone: Built-in HD microphone. Recording rate: 192 Kbps. Battery: 2500mAh lithium battery. (Integrated)