Item Type: 2 in 1 Bluetooth 5.0 AdapterALWAYS ON: The 2-in-1 Bluetooth adapter streams continuously, even while charging. Using the built-in battery for many hours - enjoy your favorite wireless content anytime. BLUETOOTH EVERYWHERE: In transmitter mode, convert non-Bluetooth TV, PC, CD player, iPod, MP3 / MP4 to Bluetooth transmitter. Receiver mode: Ideal for the sound system playing music at home or on a vehicle. PURE SOUND: aptX audio codec for a richer and deeper sound experience. Listen to the audio quality of a CD without compromise. TX mode:In TX mode, the Bluetooth transmitter can be used to stream audio from non-Bluetooth audio sources, such as non-Bluetooth TVs or CD players, to Bluetooth headphones / speakers. This transmitter is compatible with RCA connectors and AUX connectors. Therefore, please check if your audio sources have one of these types of jacks. Please note that the adapter must be plugged into the L & R AUDIO OUT or on the AUX OUT from the audio source, but not to the Component IN socket. RX mode:In RX mode, the Bluetooth adapter can be used as a Bluetooth receiver for non-Bluetooth stereo systems, such as wired headsets or wired speakers. Pair the bluetooth receiver with your mobile phone and plug your earphones into the socket of this device, you can then listen to music from your phone. NOTE: If the TV does not have an AUX OUT or L & R AUDIO OUT, a headphone jack should also work. The package included: 1 x 2 in 1 Bluetooth 5.0 Adapter 1 x 3.5mm audio cable 1 x USB charging cable 1 x User Guide Note: The color deviation may be different due to different monitor settings.