1,Unique screen design, the bluetooth transmitter can freely choose bluetooth earphones or speakers to connect. 2,The Bluetooth name will be displayed on the display, you can choose freely, which is more convenient and will not connect by mistake. 3,Make your TV and other devices Bluetooth‑enabled, which can stream audio to Bluetooth headsets, or enable the home stereo Bluetooth function to receive music from mobile phones and tablets. 4,The portable adapter can be used as a transmitter or receiver at the same time, and has a hands‑free function. 5,In transmitter mode, convert TV, PC, CD player, MP3 or MP4 to Bluetooth transmitter, receiver mode is very suitable for sound system that transmits music in the home or vehicle. Item Type: (TX or RX) Bluetooth Wireless Audio AdapterMaterial: ABSColor: As Picture ShownDisplay Size: Approx. 0.96inWeight: Approx. 89.0g or 3.1ozBluetooth Version: V 5.0 and EDR, A2DP, HSP, AVRCPProtocol Support: UART, HCIBluetooth Distance: 10m or 32.8ftTransmission Rate: 4Mbps High SpeedSensitivity: -90dBmWorking Voltage: 5VWorking Current: ≤50maBattery Capacity: 300mAhBattery Type: Li-ion Battery Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.