.2 in 1 Bluetooth Transmitter and Receiver: UGREEN 3.5mm wireless adapter supports both Bluetooth transmitting and receiving, namely TX and RX Mode. (Note: Phone calls only be supported in RX mode, not in TX mode). The aux Bluetooth transmitter allows you to transform the non-Bluetooth stereo devices (including TVs, PCs, home theaters, car stereos) to Bluetooth enabled devices. Just connect the Bluetooth converter to your old devices and enjoy the high-quality sound from wireless speakers.

. Stable Connection: With Bluetooth 5.0 technology, UGREEN Bluetooth transmitter would reduce power consumption and offer a fast and stable transmission. The playtime of the wireless 3.5mm Bluetooth transmitter is up to 5.5 hours in RX mode and 8 hours in TX mode. Additionally, the Aux connector can be paired to two Bluetooth devices at the same time in both RX and TX mode.

. Latest Bluetooth 5.3: Enjoy clearer calls in the car and higher-quality music with UGREEN Aux to Bluetooth 5.3 Receiver. The latest Bluetooth 5.3 can greatly improve the speed and stability of Bluetooth transmission and increase the sound signal-to-noise ratio to over 90dB.
Hands-Free Calling for Car: Ensure safe driving with UGREEN Bluetooth 5.3 Car Adapter. The Bluetooth receiver is designed with a big one-touch answer button and a built-in microphone, which allows you to easily answer calls through the car's speakers while driving.

. 15H Battery Life & Fast Charging: With the large capacity built-in battery, UGREEN Aux Bluetooth Adapter can play music continuously for 15 hours or stand by for 200 hours. It can be fully charged in just 2 hours with the USB-C charging port.