I have checked the audio, microphone, and wireless connection, and they all appear to be working fine, although this is a casual inspection. Two batteries are included. A USB-C cable and a 3.5mm TRRS cable for wired connection are also included, one of each. Please note that responses and shipping may take some time. If you need it urgently, please refrain from purchasing. Other features... Wired/Wireless Dual Use, Gaming, Noise Canceling