Noise-Cancelling Wireless stereo headset with acoustic optimizer and internal amplifier. Bluetooth APT-X. Integrated microphone and remote for iPhone. Closed system with speaker 40mm neodymium magnet. Pavilions pentagonal shape with internal foam-memory. Rechargeable batteries for 10 hours of continuous music. Audio cable for traditional listening. 3 silicone earbuds and foam of various sizes supplied. Laptop with lateral folding system. Denon App to create playlists and set up to 100 eq. Updating Facebook and Twitter through a button. Leather carrying case included.