Mid A. N. C. Is an active noise cancelling headphone with Bluetooth aptx technology. It delivers superior wireless audio while dampening the sound around you, letting you enjoy what matters most – the music. It offers up to 20 hours of wireless playtime when active noise cancelling is engaged or 30+ hours of wireless playtime without ANC. ACTIVE NOISE CANCELLING - Mid A. N. C. Is an active noise cancelling headphone that utilises four microphones to continuously measure and pinpoint ambient noise to block out the things you don't want to hear. Bluetooth aptX - Bluetooth aptX gives you exceptional audio quality and the freedom and convenience to move with 30 feet of wireless listening range. Detachable cable. Foldable. In-line controls. Adjustable headband. 3.5mm jack . 40mm driver. Carry case. 10m range. Compatible with universal smartphones. Batteries required 1 x rechargeable battery (included) . Rechargeable battery. 30 hour battery life. 180 minute charging time. In the box: Travel Case, 3.5 mm cord and micro USB charging cable are included, Mid A. N. C. Headphone, User Manual with Legal and Safety Information.