Features & details Active Noise Canceling(ANC): E7C Active Noise Cancelling Headphones are engineered to sound better, be more comfortable, and super easy to take with you. Put them on and suddenly your world changes. Headphones let you focus on the things that matter—your music and videos.They eliminate the noise you don't want to hear. it is great for reducing noise during long trips on a plane or in places with city traffic 30H-Playtime: Enjoy up to 30 hours of playback on a single charge thanks to our Lithium ion battery. With both Smart Noise Cancelling and Bluetooth enabled the battery can last more than 15 hours, while using Smart Noise Cancelling on its own will give you more than 30 hours! An exquisite 3.5mm audio cable is also able to be connected when battery low. Compatible with iPad, iPod, iPhone, Android and any audio devices and continue to enjoy your music Superior Sound Quality: Headphones equipt the premium 40mm powerful-aperture drivers,features advanced bluetooth 4.0 and aptX delivers superior sound quality and incredible Hi-Fi deep bass stereo {url removed} matter how noisy the world is,this headphones will making your enjoying much better listening experience Comfortable Design: Active noise cancelling headphones use the protein ear cushion that ensuring lasting comfort.90°swiveling earcups and retractable headband can help you find the most comfortable wearing way provide all day comfort.you can wear our noise cancelling headphones for long hours, and your's head ears won’t be sore afterwards Built-in Mic and Hands-free Calling: The built-in microphone allows you to use the headphones to take calls form your phone competely hands-free. move effortlessly between music and calls. These Bluetooth headphones feature controls to keep you in control of your music. Addtionally,Stable Bluetooth 4.0 for faster pairing without signal dropping