【2-IN-1 BLUETOOTH BLUETOOTH TRANSMITTER RECEIVER】 In TX mode, plug the Bluetooth transmitter into non-Bluetooth devices such as TV/PC/MP3/Airplane to transmit the audio to the Bluetooth headphone/speaker/sound bar; In RX mode, plug the Bluetooth receiver into wired speaker/headphone/car stereo and receive audio from cell phone/tablet/computer via Bluetooth. | 【Easy TO USE & STABLE CONNECTION】Equipped with the latest version of the Bluetooth chip and upgraded software, this Bluetooth adapter can turn your old non-Bluetooth device into a wireless one. One key to power on and enter pairing mode. Easy to switch between transmitter (TX) and receiver (RX) modes. | 【HIGH FIDELITY STEREO】This Bluetooth transmitter receiver can be connected with Bluetooth speakers or headphones that support HFP/A2DP/AVRCP protocol to form a wireless audio transmission network, allowing you to enjoy high-definition sound that is perfectly synchronized with the screen when watching movies or TV programs. | 【PAIR 2 DEVICES SIMULTANEOUSLY】In TX mode, the transmitter can connect to two stereo Bluetooth speakers or stereo Bluetooth headphones at the same time; In RX mode, the receiver can connect to two Bluetooth-enabled smartphones or computers at the same time. | 【WORKING WHILE CHARGING & FAST CHARGING】With 180mAh Battery Capacity, the built-in battery has a long battery life and can be fully charged within 1.5 hours. When in the low battery state, the adapter can be plugged into power source to charge and work at the same time. If you have any problems, please feel free to let us know and we will help you.