I'm not very familiar with this product, so I've only been able to confirm some of its functions. If there's anything specific you'd like me to test, please let me know in the comments. I was able to confirm that two CDs can be inserted and the audio from both CDs can be heard simultaneously through the connected headphones (see photo 1). Tapping the right-side control did not stop the sound. The right side did stop the sound when tapped, so I believe it is broken. The turning function worked for both sides, as the tracks advanced and rewound, so I believe both are working. The only included accessory is the power cord. Since I am not familiar with this product and have not confirmed all functions, I am selling it as junk. Please do not make any claims regarding the product. Please feel free to ask any questions in the comments. Instant purchase is OK. DJ equipment with a 2-channel mixer and digital display. - Model: CDM-4000 - Brand: gemini - Display: Digital display - Connection Terminals: RCA output, XLR output - Features: 2-channel mixer - Controls: Touch sensor player - Volume Control: Independent volume for each channel - Effects: Built-in effects Thank you for viewing.