gemini CDM-4000 with CD/MP3 player function, USB connection, backlit LCD display, pitch control, and track search function. - Brand: gemini - Model: CDM-4000 - Function: CD/MP3 player - Connection: USB - Display: Backlit LCD - Control: Pitch control - Track Search: Track search function - CUE Button: CUE function - Effects: Repeat function Thank you for viewing. This item was received from someone else. I am not familiar with the detailed usage, but I will answer your questions as best as I can. Condition: - CD playback operation confirmed → audio output confirmed - External input → audio output confirmed - Each button operation confirmed The response of each button may be a little sluggish at times, but they seem to be functioning. I cannot provide a guarantee. The left-side play button often does not light up, but there seems to be no problem with functions such as playback. If you have any questions regarding the functions, please ask in the comments beforehand. The set includes the main unit, power cord, and audio cable.