【Active Noise Cancellation】Turn on the ANC button, white noise will be eliminated.Litexim Noise Cancelling headphone make you more focused on your work,enjoying your music, movies and videos.It can make your world be quite and relax when you are on a plane,travel,work. 【Superior Sound Quality】Enjoy gorgeously rich sound by the leading Apt-x audio technology, perfect clear highs, dynamic mid-range,deep bass. Active noise cancelling headphones isolates the noise,create an ideal listening experience. 【Wireless and Wired Headphone】Provide 15-20 hours true wireless stereo music playtime.Never power off,use the included 3.5mm audio cable to plug in and keep the music playing.It can also be used as a wired PC game bluetooth headset with built-in microphone.