Specifications:<br> Memory capacity: 8GB<br> Display: 128 x 64lattice screen<br> Storage midea: embedded flash<br> Built-in mic: omni-directional microphone<br> External input: Stereo earphone: 3.5mm stereo socket<br> Microphone: 3.5mm stereo socket<br> USB cable: PC interface USB 1.1/USB2.0<br> Recording format: MP3<br> Supported music file: MP3/WMA<br> Record time:<br> HQ(128kbps):7680mins<br> SP(64kbps):16920mins<br> LP(32kbps):33120mins<br> Frequency: 20HZ-20KHZ<br> Max output: 300mW<br> S/N(ratio): 80db<br> Extenal: Dynamic 20mm,16ohm<br> Playback: up to 13hours<br> USB support system: Windows 2000 and above, Not for Mac.OS system.(Not for Win 8)<br> Operating temperature: 0centigrade~60centigrade<br> Battery(full charge): Recording: up to 10hours<br> Playback: up to 8hours<br> Features:<br> Recording indication, Different languages, Recording and replaying of recording files<br> 7 EQ modes: NOP, ROCK, POP, CLASSOL, SOFT, JAZZ and DBB <br> A-B repeating: repeat a certain part of a music file/ searching play<br> Built-in LCD display, can see the working status, easy control.<br> Built-in Li-ion battery, Can be charge directly through PC USB or adapter with DC5V output.<br> Can record the regular telephone/'s calling through telephone adapter.(This mode cannot work on mobilephones)<br> Flash memory up to 8GB, can record high quality voice several hours(base on recording mode and battery amount<br> Deletion function: delete MP3 music files and voice files stored in the device. You can choose to    delete a single file or all files<br> Battery low power indication, Auto power off/ Power function<br> VOR voice control recording, backlight (easily use in darkness)<br> Package included<br> 1 x Voice Recorder<br> 1 x Earphone<br> 1 x Telephone Adapter<br> 1 x User Manual