The Sonos Ace Wireless Headphones in white are brand new and sealed, featuring 40mm drivers and a frequency range of 20 Hz to 20,000 Hz. These over-ear headphones have a sleek headband design with an adjustable band for a comfortable fit. With Bluetooth connectivity and built-in microphone, they are suitable for studio monitoring, DJ, and live monitoring tasks. The headphones come with a 1-year limited warranty and include a charger for convenience. Experience high-quality sound and freedom of movement with these top-of-the-line Sonos headphones.