Oyaide Electric Re-cable Recode Blue Wired Earphones 2.5mm MMCX Oyaide This is a used item, but it has very little wear and is in good condition. I have only listened to it briefly, and I have confirmed its operation before listing. It is a 2.5mm 4-pole mini plug. It will be placed in a plastic bag, wrapped in bubble wrap, and packaged with thin cardboard for reinforcement. This is a used item and has been stored at home, so please understand this before purchasing. Returns are not accepted.