These are wireless earphones made by a manufacturer that focuses on "original sound reproduction," so the sound quality is quite good.
Some people may think that the noise canceling is a little weak, but unlike other companies' products, it has a natural effect, so you can concentrate on the music without feeling uncomfortable.
The case and main body have some signs of wear due to regular use, but there is no problem with the functionality.
Please note that only the main unit + case is sold.
Manuals etc. can be downloaded from the website.