1Adopt upgraded Bluetooth 5.0 technology, whose data transmission speed is twice that of Bluetooth 4.2, more stable connection. 2You can connect two Bluetooth headsets/speakers simultaneously to the TV in transmission mode. 3Pair two devices with home stereo system to play music simultaneously in receiver mode. 4The indicator light enables you to clearly identify the content and connection, making it more convenient to use. 5Simple appearance design, easy to carry, exquisite workman, making you fondle admiringly.Item Type: Bluetooth Adapter Condition: 100% brand new Material: ABS Color: Black Bluetooth: V5.0, Class II Supported Protocol: RX: A2DP AVRCP TX: A2DP Support for Dual Flow (TX mode): Support one transmitter connected to two Bluetooth speakers or headphones Transmitter Status Using Time (AUX): About 18 hours Transmitter Status Using Time (SPDIF): About 18 hours CODEC: Support Supported Bluetooth Headset/Stereo/Receiver Key: 0000 1111 1234 8888 Charging Time: About 3 hours Product Number: B19 8675 chip Operating Range: Up to 10m/33ft Support for Multi-point Connection (RX mode): Support for connecting two phones Receiver Status Using Time (AUX): About 20 hours Receiver Status Using Time (SPDIF): About 20 hours RX aptX HD, aptX low latency, aptX, AAC, SBC TX aptX HD, aptX low latency, aptX, SBC Battery Type: Built-in GRP6618055 lithium polymer battery Battery Capacity: 600mAh1 x Bluetooth Adapter1 x USB Cable1 x 2 in 1 Cable1 x Connecting Line1 x Signal Cable1 x User Manual