Purchased around 2018 at Tokyu Hands. It's a Sony sealed-type in-ear receiver (MDR-EX155). ◎ Wired earphones. ◎ Music control (play/pause) is possible with the multi-function button. ◎ Possibly, hands-free calls are also possible with a smartphone (※ Operation not confirmed). ◎ Cable length adjuster included. ◎ Color is gold. Used about 4-5 times at the time and stored at home. Operation confirmed, such as sound is heard. Ear tips have been replaced with new ones. Small stains are visible in places (please check inside the purple circles in photo 6). Please check the photos and contents, and purchase with your understanding. Instant purchase OK. If you have any questions, feel free to comment. ④