Description: 【2 in 1 Bluetooth Transmitter and Receiver】Bluetooth aux adapter has TX and RX Mode, Bluetooth transmitter(TX Mode) allows you via 3.5mm cable to transmits audio from TVs, PCs to Bluetooth headphones, earbuds, bluetooth speakers. Bluetooth Receiver(RX Mode) connected your smartphone to wired speakers/earphone through Bluetooth. 【Stable Connection】Bluetooth 5.1 Transmitter Receiver, built with bluetooth 5.1 technology, offer a fast and stable transmission. 【TF Card Playback】: Bluetooth audio adapter, Support TF card playback, with Clear sound quality, support high definition audio decoding, reduce sound artifacts and background noise in wireless transmission 【Wide Compatibility】: This 3.5mm Bluetooth Adapter is compatible with TV, car stereos, home stereo system, headphones, audio music streaming sound system, PC, speakers, projector, MP3, MP4 etc. 【Compact and Portable】: Wireless audio adapter, According to its status indicators, the bluetooth transmitter for headphones is quite easy to install and use, compact design, you can easily carry this Aux Bluetooth adapter around and everywhere easily. Specification: Material: ABS Size: 60.4mmx25.7mmx13mm/2.38inchx1.01inchx0.51inch Battery Capacity:180mah Working Time:10 hours Transmission distance: 10 meters Package Includes: 1Pcs 2 in 1 Bluetooth Transmitter and Receiver 1Pcs USB C Charging Cable Note: Please allow slightly errors due to manual measurement and different monitors.