The Bluetooth Transmitter is specially designed for the Audio Devices (such as MP3, MP4, TV, PC and DVD, etc.) without Bluetooth function.
After connected with them via 3.5mm audio cable or RCA cable, it can transmit the audio files of them to the Bluetooth-enabled Receiver devices (such as, Headset, Speaker, Bluetooth Receiver, etc.).
Receiver and Bluetooth Transmitter 2-in-1, has a switch that allows you to switch from one mode to the other.It supports the latest Bluetooth version V4.2 and can be paired with 2 Bluetooth headphones / speakers and stream audio to both at the same time.