Function: Audio receiver transmitter three in one. Transmitter mode: red LED light on. 1 AUX audio cable. Insert one end of the 3.5mm audio cable into the AUX interface of the adapter, and the other end into the audio input interface of the playback device (such as headphones, speakers, cars, etc.), or plug the 3.5mm audio cable of other playback devices into the audio port of the device.
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