This product is a Sony ECM-DS70P electret condenser microphone suitable for home recording. It has a 3.5mm (1/8in.) TRS connector and can be used wirelessly or wired. It features stereo sound and has a small diaphragm size. The microphone is designed in a mini disc MD form factor and is a single unit. It is a transducer type condenser microphone and is suitable for use in musical instruments and gear, as well as pro audio equipment.