Memory capacity 8GB Record times SHQ(192kbps): 5520mins HQ(128kbps):7680mins SP(64kbps):16920mins LP(32kbps):33120mins Frequency 20HZ-20KHZ Max output 300mW Storage midea embedded flash built-in mic omni-directional microphone Extenal Dynamic 20mm,16ohm S/N(ratio) 80db Display 128 x 64lattice screen External input Stereo earphone: 3.5mm stereo socket microphone: 3.5mm stereo socket USB cable:PC interface USB 1.1/USB2.0 Recording format wav(But you can transfer to MP3 by computer) Supported music file MP3/WMA Dimensions 8.3 x 3.5 x 1.2cm/3.27 x 1.38 x 0.47inch(L x W x H) Battery(full charge) Recording: up to 20hours Playback up to 13hours USB support system Windows 2000 and above, Not for Mac.OS system.(Not for Win 8) Package Included: 1 x Voice Recorder 1 x Earphone 1 x Micphone 1 x Telephone Adapter 1 x USB Cable 1X 3.5mm Audio Cable 1X RJ11 Cable 1X User Manual 1. Built-in LCD display, can see the working status, easy control. 2. Flash memory up to 8GB, can record high quality voice several hours(base on recording mode and battery amount. 3. Built-in Li-ion battery, Can be charge directly through PC USB or adapter with DC5V output. 4. Can record the regular telephone's calling through telephone adapter.(This mode cannot work on mobilephones) 5. Support multiple audio(EQ) Audio playback in multiple formats. 6. Auto power off/ Power funtion 7. Previewing / searching play 8. A-B repeat function previewing / searching play 9. VOR voice control recording 10. High-speed data connection with 2.0 USB, no need of driving. Portable Rechargeable 8GB Digital Audio Voice Recorder Dictaphone MP3 Player