Flat Acoustic Noise Noise Canceling On-ear Headphones with Case and Dual Plug Adaptor Noise Canceling Headphone, Up to 80% external noise cancellation, actively reduce unwanted ambient noise. Dual-use capability with or without noise cancellation. Flat foldable design and ear conscious design for premium wearing comfort. Supplied plug adaptors to be used in airplane. Built-in monitor switch: To hear surrounding sound without taking off the headphones. Detachable stereo audio cable. Good sound quality and noise canceling performance. With a carry gift box, it is easy for you to take it anywhere.