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 start music - Skip tracks backwards and forwards - Control your devices volume - Answer and end phone calls with the built in microphone Tune your headphones in the app - The app also comes with the option to tune your headphones with a 5 band parametric EQ with simple and easy to use controls. Specific frequencies have been chosen to give you the best possible range of tones. Bass, 340Hz, Middle, 2.6Khz & Treble. To allow for the additional headroom we have used a class ab amp to achieve optimal signal with minimal distortion The NEW QCC5124 chip we have utilised uses the latest Bluetooth 5.0 with Low Energy features to give longer listening times to your headsets. The option now to stay updated via over the air updates means your headphones will always be kept up to date with the latest improvements and additional features Wired or Wireless - OV-1-B can be used even if you don’t have them charged, with both switches off just plug in your supplied cable and away you go, enjoying the same quality of audio Specifications: Dimensions: H:25.0 x W:22.0 x D:11.0 cm Colour: Black Guarantee:1 year Material: Plastic - Metal Model Number: M-OV-1-B-PRO-BK