Item Type: 2 in 1 Audio Adapter Material: PVC Color: As Pictures Shown Weight: Approx. 18g/0.6oz Model: RT02 Technology: BT5.0, A2DP, AVRCP Operating range: up to 10m/32.8ft Pairing name: RT02 Transmission mode: red indicator light Accepted mode: blue indicator light Package List 1 x Audio Transmitter and Receiver 1 x 3.5mm Auxiliary Cable 1 x Manual 1RT02 can help home speakers, wired headsets, car speakers upgrade to Bluetooth function. 2The computer is connected to the Bluetooth speaker, abandoning the shackles of traditional speakers, and listening to songs wirelessly is more free. 3The desktop computer is connected to Bluetooth, and the desktop computer is free to listen to music and play games wirelessly without the shackles of wired headphones. 4Driverfree quick pairing, plugandplay Bluetooth quick matching connection is more convenient to use. 5This extremely portable, lightweight wireless audio transmitter is an ideal wireless audio solution for a wide range of situations and uses.