A 2 in 1 Bluetooth Transmitter Receiver Portable, Lightweight and Wireless is an Ideal Solution. Switches Between Transmit and Receive Modes with a Simple Push of a Button. Easily Connect Using Bluetooth or a 3.5mm Audio Cable. This Transmitter Receiver Adapter can be widely used in your Computer, Laptop, Sound System, Headphones, Smartphone, Mp3 Player, CD Player, etc.