1、When used as a transmitter, it wirelessly transmit music from your mobile phone, TV, computer device to your receiver, stereo headset or speaker for Bluetooth and other device. 2、When used as a receiver, it can be used as a stereo headset for Bluetooth or connected with speakers and other devices to complete the wireless transmission of audio signals. 3、Professional manufacturing, it can work with stable performance and high reliability. 4、Easy to install and use, very convenient and practical, small and compact, easy to carry. 5、Equipped with LCD screen display, built‑in noise reduction quality, compatible with automatic matching. 1 x Audio Adapter1 x Instruction1 x Audio Cable Condition: 100% Brand NewItem Type: Audio AdapterVersion: For Bluetooth 5.0Function: Audio receiving and transmitting combo;Built-in noise reduction HIFI sound quality;Transmission Signal Distance: Approx. 10m / 39.4in;Fully compatible with automatic matching;Input Interface: 3.5mm;Input Voltage: DC/5V;LCD screen display;No need to drive, plug and play;No built-in battery, external power supply.Colour: Black