This is a discontinued SUPEREQ noise-canceling wireless headphone. Functionality has been confirmed. The noise cancellation works very well, even eliminating the sound of trains. It's also very lightweight, so it doesn't cause fatigue even when worn around the head and neck. Being a wireless Bluetooth headphone, it prevents tangled cords, unlike wired headphones. Accessories are included. Charging is via micro-B. It can also be used as a fashion item. It has a sound delay prevention function and is a full-fledged headphone that allows you to enjoy clear sound from the top notes to the bass notes.