Features: This 16/8/4GB mini USB flash digital voice recorder will be a good helper. It supports WAV formats, will be your good partner. This voice recorder features simple one-key recording and longtime recording - no software to install. Not only does it make audio recordings, but it also works as a regular USB flash drive. What a functional voice recorder that provides great convenience in class-recording, conference-recording as well as note-recording. Specifications: Flash Memory: 16/8/4GB (Please select FAT32 system when formatting the recorder) Recording time: About 70 hours Recording Formats: WAV Power Supply: Li-ion battery Operating System: for Windows 2000/XP/Vista/Win 7 Recording Bitrate: 128K bps USB Port: USB 2.0 Frequency Response: 20Hz-20KHz Max Audio Output Power: 5mW Working Temperature: 0~40ºC Material: ABS Size: Approx.70x10x20mm/2.76x0.39x0.79in Color: Black Quantity: 1 PC Package Includes: 1xUSB Voice Recorder 1xManual note: Please allow 0-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!