Linner NC25 Wired Noise Cancelling Headphones - BLACK Brand New, Factory Sealed About this item Active Noise Cancelling: The active noise cancelling headphones use ANC technology to capture the ambient sound with active noise cancelling headphones microphones, process the incoming sound waves and creates inverse waves to offset them. The wired noise cancelling earbuds reduce background noise up to 28 dB for immersive sound even on the airplane, subway or in the crowded environment. HD Stereo Sound: Sounds crisp and clear, better in the bass. Wired Noise cancelling headphones built-in mic and remote let you take calls and control your music hands-free, presents you a better audio experience. Active Noise Cancelling earbuds - Ideal for exercise, travel and international flights. Secure Comfortable: Ergonomic silicone ear tips of active noise cancelling earbuds allow you to listen to the music for a long time without pain perception and keep a long sense of comfort during the wear. For the most comfortable fit and better noise cancelling an experience, Choose the most optional size of eartips that best suit you in 3 pairs of soft silicone earplugs and hooks. Awareness Monitor Mode: Lets you clearly hear airline or subway announcements and what?s around you with the press of in-ear monitor button without removing the active noise cancelling earbuds when ANC is on. LINNER provides 12 months hassle-free warranty to ensure the enjoyment of your purchase. 20 Hours Active Noise Cancelling Playtime: Ultra long battery life of noise cancelling wired headphones enjoy 20 hours of continuous music playback or voice chat in Active Noise Cancelling mode after per 2 hours of charging. You can listen to music even if the active noise cancelling is off or if the battery is dead.