Receive (RX) + transmit (TX) signals as one, suitable for multiple devices.Equipped with a high-performance Bluetooth 5.0 conversion chip, the signal transmission is more stable and rapid, and delays and freezes are rejected.Compatible with mainstream systems, no need to install drivers, plug and play.Adopt intelligent chip to stable signal and fast operation.In a non-interference environment, it can achieve 10 meters long-distance transmission, and the connection is stable and smooth.Type: Audio AdapterBluetooth version: 5.0Input voltage: DC5V/without built-in batteryApplicable type: computer, TV, projector (transmitting mode)/speaker, earphone, car device, call (receiving mode)Colour:blackMaterial:ABSSize:43 x 20.5 x 10.8mmPackage Contents:1 x Host1 x Audio CableOnly the above package content, other products are not included.Note: Light reflection 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.