Description:on control: You can control the on to adjust the mode, including regular voice , voice control and power off, also, this is designed with a delete function, convenient for you to use.Voice : This kind of pen supports AD format with 192Kbit technology, the voice control is about 50dB, and it can split the automatically, saving effort for you.Voice playing: This device supports MP3, WMA and WAV play, you can operate it with FF and FR, helping you listen the content easily.Naming: This kind of audio is equipped with timestamp, the file is named after time, convenient for you to find out the files you needs.Wide use: This small listening device is suitable for lectures, meetings, interviews and other occasions, the ant contents.Specification:Material: aluminum alloy.Color: black.Size: approx. 7*2.4*1.9cm/2.76x0.94x0.75inch.nsfer port: USB2.0.Work time: about 500h.Standby time: about 365 days.Capacity: max 64G.Note:Due to the light and screen difference, the item’s color may be slightly different from the pictures.Please allow a slight deviation for the measurement data and e sure you do not mind before ordering.Package Includes:1 Piece Voice (with 1 Piece Earphone, 1 Piece Cable, 1 Piece English Introduction).