3DIO FS Binaural Microphone, designed perfectly for recording. - Model Name: 3DIO FS Binaural Microphone - Features: Binaural recording compatible - Power: ON/OFF switch equipped - Accessories: Comes with a dedicated case I used this a few years ago, but I no longer need it, so I'm selling it. I used it for oil massage, etc., but I have cleaned it, so it's clean. I stored it with a desiccant, but please refrain from purchasing if you are sensitive to used items, as it has been stored by a private individual. Since there is no box, please purchase only if you understand that it will be shipped in a cardboard box.