I bought some earphones for telework, but I accidentally bought ones without a microphone. They are new and unused. Inner-ear headphones equipped with Bass Dimension Exciter. Features a large φ15mm driver for deep sound reproduction. Enjoy a sound with depth, thanks to the large driver unique to the inner-ear type, which you can't experience with earplug types. Rich bass reproduction with the newly designed base dimension exciter. Includes a retractable holder that allows you to freely adjust the cord length. You can freely adjust the cord length to suit the place where you put your portable player, such as a pocket or bag. Thank you for viewing.