Features: 2 in 1 function: Receiving RX+ transmitting TX in one design, double signal one key switch(Red light represents to enter the transmission mode, blue light represents to enter the receiving mode.), which is easy to use, suitable for a variety of equipment. The computer is connected to the Bluetooth speaker/headset, and the transmitting range is up to 10m, so you can enjoy the original music. Low delay HiFi stereo: With low latency and fast transmission of low noise, it ensures excellent stereo sound and allows you to enjoy HiFi stereo music without wire restriction. Just insert the speaker or the amplifier interface, it saves wiring trouble and enjoys wireless life. Bluetooth 5.0, stronger compatibility, faster and more stable signal transmission, giving you more pleasant listening experience.