Used a few times on the left ear only. The right ear is unused. I am selling because I purchased something else. Purchased at a docomo store. There are no concerns about the product condition or how it sounds. Operates for 9-10 hours. Comes with a box. Please let me know if you don't need the box. Original price: 11,800 Please feel free to comment if you have any questions. Seamless connection, completely wireless Active noise canceling External sound capture function Gyro spatial audio Volume control