This low-cost Bluetooth 5.0 receiver and transmitter will allow you to receive an audio stream from a smartphone or a tablet for example, or to broadcast your music wirelessly to a classic audio system or a headphone. In addition to the bi-directional Bluetooth, the device provides a Micro SD slot, a Toslink optical and coaxial input and a Jack 3.5mm input/output. It also features a display showing pairing information for easy and convenient use, as well as a volume control knob.