(Latest Bluetooth 5.0 and Hi-Fi Sound Quality)Our wireless earphone adopt advanced Bluetooth 5.0 technology and antenna technology, which provides fast and stable transmission, 33ft-50ft bluetooh range. With built-in high-quality audio chip, It catches every details of music and transmits rich sounds with crisp treble and proper bass. CVC 8.0 noise cancellation technology reduces ambient noise and echo, ensure Hi-Fi sound clarity.