After extensive research and development, the QuietComfort Ultra Headphones in Sandstone color, paired with a Green Extreme Portable Wireless Charger, have been designed to redefine your audio experience. These headphones are engineered with world-class noise cancellation technology, surpassing its predecessors in quietness and offering an unrivaled listening environment. The breakthrough spatialized audio feature enhances your music experience, making it more immersive than ever before. Thanks to Bose Immersive Audio, the sound is taken out of your head and placed in front of you, creating the most natural listening experience, regardless of the content or source. The CustomTune technology is another innovative feature that enhances your sound experience. It analyzes the shape of your ear and adapts the audio performance accordingly, ensuring that every note hits exactly as it should. The QuietComfort Ultra Headphones are designed for long listening sessions, offering up to 24 hours of battery life, or up to 18 hours with Immersive Audio. The headphones are crafted from luxe materials, providing unrivaled comfort. The earcups envelop your ears in a soft embrace, while the headband evenly distributes pressure. The sleek metal arms add a touch of sophisticated design. The headphones are equipped with advanced Bluetooth 5.3 for seamless connectivity with your devices. The Bose Music app allows you to keep track of your paired devices, offers quick and easy setup, and gives you access to Adjustable Eq settings. The QuietComfort Ultra Headphones are not just about music. They also offer crystal-clear, natural-sounding phone calls. The revolutionary microphone system focuses on your voice and filters out background noise, ensuring you can hear and be heard with amazing clarity. The headphones come with intuitive touch controls on the earcups, allowing you to play/pause music, adjust the volume, switch tracks, and even answer calls without needing to take out your phone. The Bose SimpleSync technology allows you to sync your headphones with a Bose smart soundbar, enabling you to watch Tv at a different volume than others, or listen discreetly while someone sleeps beside you. The QuietComfort Ultra Headphones are also equipped with Snapdragon Sound Certification for Android and Google Fast Pair for easy connection with Android devices. The built-in head detection feature automatically turns the headphones on and off, adding to the convenience. In summary, the QuietComfort Ultra Headphones offer a leveled-up listening experience with world-class noise cancellation, breakthrough spatialized audio, and an elevated design with luxe materials. It's everything music should make you feel, taken to new highs..