[Advanced Noise Cancellation Technology] The noise canceling headphones adopt advanced ENC technology to reduce noise in crowded and noisy environments like aviation. Reducing ambient noises by up to 96%, it enables you to immerse yourself into your preferred music, movies, audiobooks, or videos without distracting sounds. [40+Hour Longer Playtime] A built-in battery keeps your wireless Bluetooth headphones stay powered, so you can enjoy your world without noise for 40 hours long time on a single charge. Plus, plug in 3.5mm stereo audio cable to extend the playtime when in a low battery level. [HiFi Audio Sound] Intoberp ENC headphones equipped with cutting-edge 40mm drivers bring clear, rich and remarkable wireless music, which will help you enjoy music better. Revel in undisturbed listening with fully balanced bass and high-fidelity tones in extraordinary clarity. [Clear Hands-Free Calling] Bluetooth headphones are built-in HD microphone with advanced audio