Discover the most incredible music experience with the Marshall Monitor II ANC, with advanced active noise canceling technology that blocks the noise. It has a wireless playtime of up to 30 hours. Because of its active noise cancellation technology, it measures ambient noise in order to block out the things you don’t want to hear. Because of its active noise cancellation technology, it measures ambient noise in order to block out the things you don’t want to hear. Not only that, but these Marshall headphones come with custom-tuned 40 mm dynamic drivers that produce a superior signature sound. KEY FEATURES Up to 30 hours of playtime It comes with voice assistance. Their compact size and foldable design make them perfect for enduring long days on the road. Delivering high performance sounds like you’ve never heard before.