Lambskin leather. Memory foam cushions. An ergonomic pressure-relieving headband that fits different types of head. All brought together by a lightweight aluminium frame. These versatile over-ear headphones give you cocoon-like comfort that lets you listen all day (and night). So comfortable, you won't want to take them off. Listen for up to 35 hours with ANC, or turn ANC off and get up to 40 hours. That’s a week of work calls on a single charge.