QuietComfort Ultra Headphones takes everything music makes you feel to new highs. It starts with world-class noise cancellation that's quieter than its predecessors. Then breakthrough spatialized audio makes your music feel more immersive than ever before. Bose Immersive Audio takes what you're hearing out of your head and places it in front of you for the most natural listening experience - no matter the content or source. And CustomTune technology upgrades your sound even more by analyzing your ear's shape and adapting the audio performance so everything you listen to hits exactly as it should. Keep the session going with up to 24 hours of battery life (up to 18 hours with Immersive Audio) and unrivaled comfort from luxe materials. The earcups wrap your ears in a soft hug while the headband spreads pressure evenly. And sleek metal arms add a statement of sophisticated design. Connect to your devices with advanced Bluetooth 5.