Thank you for viewing! This item was purchased directly from the manufacturer and used to play in-store background music at a restaurant. I am unable to confirm the function of each button as I do not know how to use them. This is a high-performance, compact disc player for professional DJs. I have confirmed that the power turns on, CDs can be read, and sound output is possible through the red and white RCA pins via a mixer. Overall, there are scratches and signs of use, so I will sell it to someone who understands this. Please check the photos carefully as there are some scratches on the used item. There is no original box, so I am not responsible for any damage or trouble during transportation. It will be packed in a recycled box. No claims and no returns are accepted. Includes the main unit and power cable. - Model Name: Pioneer CDJ-1000 - Type: Compact Disc Player - Color: Black - Functions: Loop, Reloop, Wave Search - Interface: Display, Track Search, Tempo Adjustment Thank you for viewing. Thank you in advance.