Features1.Transmitter Mode: Wirelessly transfer audio from a non-Bluetooth TV, home stereo system or CD player to a Bluetooth headset / speaker / receiver.2.Receiver Mode: Wirelessly transfer audio from a Bluetooth-enabled phone, tablet or computer to wired stereo, speakers or headphones.3.AUX Output Mode: Through the car AUX interface, a car without Bluetooth function can easily play the music on the phone or tablet.4.USB Output Mode: Read the USB interface through the car, it is a car without Bluetooth function can easily play the music on the phone or tablet.5.Applications: For Car, stereo, tablet, headset, computer, Bluetooth TV, etc.Specification Type：Bluetooth 5.0 Audio Transmitter/Receiver Technology：BT5.0, A2DP, AVRCP (receiver only mode) Operating Range：Up to 10m / 33ft (without any obstacles) Pairing Name (Receiver Mode)：M135 Transmitter Mode：Red LED lights up Receiver Mode：Blue LED lights up Operating Frequency：2.4 MHzPackage: 1 x Bluetooth 5.0 Audio Transmitter/Receiver 1 x 3.5mm Aux Cable(1M/39in) 1 x User Manual