All accessories are included. The item is in very good condition due to infrequent use, but please understand that it is a used item before purchasing. The bottom of the box is partially damaged. Please check the photos. Equipped with a noise-canceling function, it generates high-precision signals to cancel out ambient noise collected by the built-in microphone, reducing noise and allowing you to enjoy clear, high-quality sound even in noisy environments such as airplanes and trains.