【Transmitter + Receiver 2-in-1】:Easily add Bluetooth to your car audio systems, home stereos, speakers, wired headphones via the auxiliary 3.5mm AUX socket - Minimal footprint slim design with 3.5 mm plug. Plug & play, easy setup, one button operation, clear status indicator Make easily your TV / projector Bluetooth-enabled by using the transmitter (Tx) mode via the 3.5mm audio jack | 【Automatic Pairing】Once paired, the Drive Receiver will automatically reconnect to the last Bluetooth device you paired with whenever it is within wireless range. | 【New upgrade Bluetooth 5.0】:Latest version 5.0 of Bluetooth wireless communication standard, Low latency, Noise cancelling, improved speed & range, dual audio and backwards compatible. | 【Built-in microphone and battery life】: Built-in rechargeable lithium battery, can be used for up to 4 +hours on a single charge, when the battery is low, it can be used while charging, convenient and worry-free. In addition, the small, portable size of this Bluetooth Auxiliary Adapter is very convenient to carry in the car or on the go. | 【Family Enjoys the Silence】: Make easily your TV / projector Bluetooth-enabled by using the transmitter (Tx) mode via the 3.5mm audio jack，Benefit from Bluetooth audio when exercising, watching late-night TV shows, or simply when you want to keep the entertainment for yourself only. | 【Our promise】If you are not 100% pleased with your order, our amazing customer support department is always ready to help.