Product Description Choose Eris HD10BT headphones and you’ll never again have to choose between quality, convenience, or a robust feature set. Potent 40mm drivers sound Offer crystal clear sound and accurate frequency response. Choose wired connectivity for your studio work, or Bluetooth wireless when you’re on the Grand click on active noise canceling when it’s time to focus. The built-in mic will let you take a call without removing the headphones or messing with a cable. Thick ear cushions ensure serious isolation—your music won’t bother anybody else while you listen in total Privacy. From the Manufacturer Choose Eris HD10BT headphones and you’ll never again have to choose between quality, convenience, or a robust feature set. Potent 40mm drivers sound offer crystal clear sound and accurate frequency response. Choose wired connectivity for your studio work, or Bluetooth® wireless when you’re on the go—and click on Active Noise Canceling when it’s time to focus. The built-in mic will let you take a call without removing the headphones or messing with a cable. Thick ear cushions ensure serious isolation—your music won’t bother anybody else while you listen in total privacy.