Designed with our recording and studio heritage in mind, the meters OV-1-B-connect pro headphones feature wireless aptx HD bluetooth technology and an upgraded 50mm driver - providing superb professional audio performance. Features: They utilise the newest Bluetooth technology which delivers a superior wireless transmission. It can transmit up to 24-bit and High-Definition (HD) audio – ‘better than CD’ – direct to your headphones, wirelessly Rich warm HD sound, incredible automatic noise cancelling, unique VU meter with colour changing LED and NO WIRES! CONNECT, STYLE, TUNE - Available for iOS and Android Meters Connect enables you complete control over your Meters OV-1-B-CONNECT headphones. Using an RGB LED you can now control the colour of your Meters as well as control the brightness of the dial when in dark spaces such as long haul night flights SIDE CONTROLS - Use the physical buttons on the side of the headphones to control your Bluetooth device. Stop and star