Air Zuker Bluetooth 4.1 Headphones Wireless Sport Stereo Headsets with aptX technology (Balanced Audio, Build-in Mic, CVC 6.0 Noise-Cancelling) Latest Bluetooth 4.1 Technology: Super-faster connect speed(3ms), zero data Loss, ultra low power consumption. Two powerful audio drivers on each side offering balanced audio and crystal clear sounds, providing a comfortable and dynamic listening experience. Comfortable and secure design fits perfectly to your ear; the cable smartly stays out of your way when running, jogging or exercising. CVC Noise Cancellation 6.0 technology reduces outside noises, enable clearer sound from microphone, you get high quality, hands-free phone conversation even on the street or inside shopping mall. Up to 5 hours of continuous talking / music time; easy and fast pairing with smartphones, tablets and other Bluetooth enabled music devices.