It can be used as an ordinary cassette player, and can also convert tapes and other foreign audio into MP3 format. There are two modes: automatic division and manual division. The default mode is manual division: one MP3 file per tape, long press the down key, the color of the indicator light changes from green to blue, and the automatic division mode is entered: one MP3 file per song. With playback function, you can check the newly recorded file by pressing the play key after stopping. Support other foreign audio conversion, and can directly convert old-fashioned record player, phonograph, VCD and other audio into MP3 files to USB flash drive. USB power supply or 2 x AA batteries power supply. (This product does not come with a battery) Function description: Convert old cassette music to MP3 format independently, without using a computer. Support external audio-such as old record player-to record as MP3 file. Plug and play. Playback function, which can directly view the recorded music files with the device. dry battery or USB interface power supply. Portable design, easy to carry. It can also be used as a personal cassette player, and it can also be used as an ordinary MP3 player when a TF card is inserted. Specification parameters: Interface: USB2.0 standard Recording format:MP3 Power supply:2 x AA dry batteries or USB interface power supply. (Not included batteries) Audio channel:stereo sound of left and right channels. Audio bit rate:128Kbps If the recorded sound has problems with current sound or the quality of the tape itself, the noise can be removed by computer software. Very simple operation. It's not the product. Analog sound is inevitable. Note:Due to different printing batches, if there are slight differences in the words in kind, it will not affect the use. Color:Black & White Material:plastic Package Contents: 1