SONY MDR-NC31 earphones. I used these before, but I'm selling them because I don't use them anymore. Operation has been confirmed. I wiped them with a disinfectant sheet, but there is some discoloration and dirt that couldn't be removed. Please check the photos. The included ear tips are also included. Immediate purchase is OK. Please refrain from purchasing if you are nervous or seeking perfection, as this is a used item. Please feel free to comment if you have any questions or would like additional photos. Please check the photos and no claims and no returns are accepted.