Open box, no sign of previous use The NEW Bose QuietComfort Wireless Over-Ear Headphones in White Smoke are designed for studio monitoring, DJ, and live monitoring. With a frequency range of 20 Hz - 20,000 Hz and a driver size of 40 mm, these headphones provide high-quality sound for various listening needs. The wireless Bluetooth technology allows for convenience and freedom of movement, while the noise cancellation feature ensures a clear and immersive listening experience. Built-in microphone, headband form factor, and sleek design make these Bose headphones a top choice for those seeking superior audio quality and functionality. Return only accepted the same condition as you would receive, use item will not be eligible for return