... headband design -Rechargeable system 2.4GHz digital wireless headset A. 2.4GHz high SNR uncompressed 10 M wireless transmissionActive FM type non-compression ... the USB port, USB transmitter direct decoding ,no need to install a code program ,Plug an play with 3 ... 10M, 360 °Interface: USB 2.0 Services:Brand / OEM / ODM are available Package Contents:Wireless headset, USB transmitter,Charging cable, User ...