Thank you for viewing. This is a wired earphone with a microphone from Sony Ericsson. I found it on its own while cleaning up. I believe it was the earphone that came with the early Xperia models. Model number: HPM-75/J I tested it and both sides work fine, but since it's old, please understand that it's sold as-is. The in-ear pads are not included, so please use commercially available ones.