The JBL DUET NC headphones combine eye catching design and premium materials to deliver the world-renowned JBL Signature Sound with wireless convenience and superior active noise cancelling capabilities. With their metal touches on the angled ear-cup and perfectly sealing ear-cushions in soft protein leather they offer an immersive, more enjoyable sound experience while featuring premium design. The Active Noise-Cancelling technology allows you to indulge in your music, nothing but music, both in wired and wireless modes. They also provide 24 hours of battery life in Bluetooth mode (15 hours in Bluetooth and noise cancelling mode).