ITEM NAME:2in1 Bluetooth Transmitter & Receiver Wireless Stereo Audio Adapter Descriptio n Description: - Used the Bluetooth Transmitter to transmit audio from a TV to a wireless headset. - Used the Bluetooth Receiver to make your hardwire headphone, speaker, car stereo or headset have bluetooth capabilities to pair to a bluetooth device, such as a smartphone. - Your audio transmission master: Used for all audio interface device like TV, PC, CD Player, etc. - Real-time low latency and high-quality audio transmission. - Receive Mode: Easily connect/pair to a phone and transmit audio to our Bluetooth Audio Interface, which is connected via 3.5mm/Aux Jack or RCA to your headphone, speaker, car stereo or headset. - Transmit Mode: Transmit the audio from a CD Player, TV, PC, online games and other devices to your wireless bluetooth headset. - Enjoy wireless audio for your enjoyment! Specifition: Material: ABS Color: BLACK Size: 50*26*6 Product List: Bluetooth Transmitter Receiver Host USB charging line 3.5 Audio Connection Line Instructions How   to   use Function Operation - To Turn ON: Press/Hold middle button for 5 seconds. Blue light will blink. To Turn OFF: Press/Hold middle button for 5 seconds. Blue light will turn OFF. Automatic Shutdown Function: The device will automatically go into power-saving sleep mode due to the absence of connection state after 10 minutes. The light will turn OFF. Receive Mode - (Used for all audio interface speaker devices) Turn on the device by pressing/holding middle button for 5 seconds. A Blue status light will blink rapidly indicating Bluetooth is in pairing mode. Insert the provided 3.5mm/RCA cable connecting into the the product Receiver Mode input and the other end of the 3.5mm/RCA cable into your speaker, headphone, car stereo or any device that accepts audio input via 3.5mm/AUX port. After a few seconds, the device will automatically pair to your smartphone or device that will output audio to the Receiver Mode of the product..Used the Bluetooth Transmitter to transmit audio from a TV to a wireless headset. - Used the Bluetooth Receiver to make your hardwire headphone, speaker, car stereo or headset have bluetooth capabilities to pair to a bluetooth device, such as a smartphone.