The Sony WH-ULT900N/HC Noise Canceling ULT Power Sound Headphones are engineered for powerful audio with a 40 mm dome driver and neodymium magnet, delivering deep bass and clear sound across a 5 Hz–20,000 Hz frequency range. Featuring Bluetooth 5.2 with LDAC support and a 20 Hz–20,000 Hz wireless range, these headphones ensure stable, high-quality streaming. With up to 50 hours of battery life (NC OFF) and 30 hours with noise cancelling, plus a 3.5-hour full charge via USB, they are built for extended use. Designed with a lightweight 255 g over-ear build, ULT button for enhanced bass, and ambient sound mode, they offer both immersive listening and situational awareness.