1.Break the wired system,and become wireless instantly. 2.Solve devices such as speakers, car , computer projectors, etc. that do not have Bluetooth device capabilities, and achieve Bluetooth wireless transmission. 3.Transmission stable Bluetooth chip 5.0 uses high-quality chip power consumption good bass quality effective transmission distance up to 10 meters. 4.Car audio to Bluetooth audio wireless navigation to listen to music safely enjoy the fatigue brought by driving. 5.Desktops are no longer tied by wires, can be connected to Bluetooth audio, wireless control is unlimited. 1,Traditional wired speakers are connected to a Bluetooth speaker TV / mobile / tablet via a Bluetooth receiver in seconds. 2, and small, smart and easy to carry, high-quality materials, strong texture, shielding interference, wear resistance and oxidation resistance, longer service life. 3,Use environmentally friendly TPE wire with a natural length of 33CM and a length of up to 1.2M. size:33x1.5cm Material:ABS colour:black Package Contents: 1 * Bluetooth receiver 1 * Instructions Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.