The COWIN E7 Active Noise Cancelling Headphones have a powerful Active Noise Cancelling Function. Significant noise reduction for travel, work, and anywhere in between. Advanced active noise reduction technology quells airplane cabin noise, city traffic, or a busy office, makes you focus on what you want to hear, enjoys your music, movies, and videos. NFC pairing aided by voice prompts promises a quick and stable connection with your Bluetooth-enabled devices, Powerful Bluetooth Functio