Bose QuietComfort Ultra Diamond — immerse yourself in music at a whole new level. Spatial Audio and CustomTune technology create a personalized, realistic sound. Powerful noise cancelling completely eliminates external noise, while Aware Mode lets you control the surrounding environment. Premium microphones ensure clear and crisp calls in any environment. Soft cushions and a comfortable design are ideal for hours of use. Up to 24 hours of battery life + fast charging. Bluetooth 5.3, Touch Control and Bose App — full control at your fingertips. Premium sound. Maximum comfort. True Bose experience.