Top-class, circumaural, closed HD Bluetooth headphones. Large, lightweight linear HD drivers with ventilated rear chamber, for high levels, precise sound reproduction, extreme low bass, suitable for high resolution audio. Bluetooth 5.0 with APT-X and AAC for music streaming in CD-like quality from Spotify, Amazon Music, YouTube, Apple Music and co. Video sound is transmitted lip-sync, ranges of up to 20 metres are possible.