For sale: SONY ECM-B1M. Purchased from the Sony Store at the end of 2023. The ability to change the directivity is very convenient, and the sound quality is surprisingly good for its ease of use. I think the fact that it can record digital audio with some cameras is also excellent. However, the microphone sound quality of the camera body I was using was already quite good, so I didn't use it very often. (Used outdoors about 5 times) Therefore, in my subjective opinion, there are no noticeable stains on the main unit or the windscreen. The terminal cover, soft case, instruction manual, and everything that came with it at the time of purchase are all included. The barcode has not been cut out. Cameras and lenses are not included. If you have any questions, please feel free to comment.