SONY Wireless Microphone ECM-AW4 Microphone + Receiver Set This is a genuine Sony Bluetooth wireless microphone system. It is widely used for video shooting, interviews, event recording, and streaming. [Set Contents] ・Microphone Unit (MICROPHONE) ・Receiver Unit (RECEIVER) [Main Features] ・Bluetooth compatible, no cables required, communication range up to approximately 50m (line of sight) ・Clip-on for hands-free use ・Compatible with single-lens reflex cameras, mirrorless cameras, IC recorders, computers, etc. ・Two-way communication is possible, convenient for interviews [Condition] One of the clip parts is damaged. This does not affect the shooting or operating environment at all. I am selling it because I bought a new one. Everything in the photos is included. [Recommended Uses] ・High-quality audio recording for YouTube and live streaming ・Video shooting with a camera ・Use at academic conferences and seminars ・Event and interview recording This is a popular model, so if you were looking for one, please consider it.