Sony ULT 900N headphones offer powerful bass, exceptional clarity, and impressive noise cancellation to enjoy the ULT POWER SOUND experience anywhere. With these headphones, you can choose between two unique sound settings: deep bass and attack bass, which bring music to life and energize it. Noise cancellation and ambient sound modes allow you to listen to music in any situation. The battery life is impressive, allowing you to enjoy music for up to 30 hours continuously. Additionally, the headphones are designed for comfort and style, providing an exceptional wearing experience.