... and play intelligent connectionWhen small transmitter connect to the USB port, USB transmitter direct decoding ,no need to install a ... fi sound at anytime. E. Rechargeable system Built-in charging system,no need replace battery,rechargeable used to solve ... Brand / OEM / ODM are available Package Contents:Wireless headset, USB transmitter,Charging cable, User’s guide Business type:Brand / OEM / ODM ...