SonicSolice Active Noise Cancelling Bluetooth Over Ear Headphones, Champagne with Tan Incredible Full Range Sound: Connect to the SonicSolace headphones using Bluetooth, turn on the Active Noise Canceling feature and slip away to your happy place. Take comfort in your sound, maybe for just 30 minutes or maybe for an entire 8 hour flight. Choose from Classic Black or the elegant Champagne & Tan. Active Noise Cancelling: Immerse yourself in your own soothing aural oasis with fully active noise cancelling technology. External microphones "listen" to the environment and then generate a reverse signal that eliminates background noise and gives you peace of mind. Great Sound: Life is too short for audio products that don't sound great! We believe that the whole point of listening to music is to hear it as the artist intended. Our engineers and audio experts have spent countless hours listening to and comparing various headphones until we were satisfied we had found models that fit our demanding standards. Bluetooth 4.0: The Bluetooth 4.0 radio allows you to wirelessly connect to your smartphone, so you can enjoy your favorite music or audio book without the hassle of dealing with cables. Features: Up to 16 hours audio playback without Active Noise Cancelling enabled Up to 8 hours of audio playback with Active Noise Cancelling enabled Built-in 320mAh Lithium-ion battery 20 Hz ~ 20 kHz frequency response Bluetooth version 4.0 with A2DP, AVRCP, HFP, and HSP profiles 40mm drivers with neodymium magnets 105dB sensitivity Audible indication of low battery status Warranty: Monoprice not only stands behind every product we sell with a 1 year replacement warranty, we offer a 30-day money back guarantee as well! If the product you purchase does not satisfy your needs, send it back for a full refund.