Master & Dynamic MW75 Neuro Wireless Headphones new in box. These are special. Not only are they built like a tank with mostly aluminum construction to last for years, they also feature Beryllium drivers for excellent sound, 8 microphones built-in for great hands free and Active Noise Cancelling performance. They also have EEG sensors built-in to the ear pads to monitor brain activity with the included app. It was designed with the AI to send notification when your concentration goes down. It's great for work, as it's been proven that it's good to take the occasional break, so you stay at maintain peak performance. You'll get a notification when your focus goes down, so it's time for a break. They work as excellent sounding wireless and noise cancelling headphones, but also has this cool feature that can be used if you choose to use it. It sold for $699 new, asking only $275.