8GB Voice Recorder Rechargeable Steel DIGITAL Sound Voice Recorder Dictaphone MP3 Player Record Mini Player|Digital Voice Recorder Specifics: Memory capacity: 8GB Display: 128 x 64lattice screen Storage midea: embedded flash Built-in mic: omni-directional microphone External input: Stereo earphone: 3.5mm stereo socket Microphone: 3.5mm stereo socket USB cable: PC interface USB 1.1/USB2.0 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: Dynamic 20mm,16ohm Playback: up to 13hours USB support system: Windows 2000 and above, Not for Mac.OS system.(Not for Win 8) Operating temperature: 0centigrade~60centigrade Battery:NO Playback: up to 13hours no built-in-batty