The Sony ULT WEAR WH-ULT900N in sleek Black are wireless over-ear headphones designed for those who appreciate deep, impactful sound. They feature a dedicated ULT button that allows you to instantly boost the bass, while the Digital Sound Enhancement Engine works to restore high-frequency elements lost during compression. These headphones utilize 40 mm dome-type drivers to deliver a wide frequency response from 5 Hz to 20,000 Hz, ensuring a rich audio experience whether you are listening via Bluetooth 5.2 or using the included detachable cable with its gold-plated L-shaped plug. To help you focus on your music, active noise cancelling blocks out environmental distractions, making this Black model a practical choice for commuting or working in noisy spaces. You can rely on a battery that lasts up to 30 hours with noise cancelling active, or extend that to 50 hours when it is turned off, with a full recharge taking about 3.5 hours via USB. Weighing approximately 255 grams, the lightweight build is balanced for long listening sessions, and the device supports high-quality audio formats including LDAC, SBC, and AAC for a stable connection within a 10-meter range.