Grwibeou Wirele 2 in 1 USB Bluetooth 5.0 Dongle Adapter for PC TV Speaker Wirele Mouse Music Audio Receiver Transmitter aptx This portable, lightweight wirele audio transmitter and receiver is an ideal wirele audio solution suitable for various situations and purposes. It can be used with computers, mobile phones, TVs, game consoles, home speakers, and car speakers. Use the latest Bluetooth 5.0 technology, fast transmiion speed, high-quality stereo music, Bluetooth hands-free calls. Enjoy the convenience that Bluetooth technology brings to life.Specifications:Model: RT02Technologies: BT5.0, A2DP, AVRCPOperation Range: Up to 10m / 33ftPairing name:RT02Transmit mode: red indicator lightReceiving mode: blue indicator lightDimensions: 32mm*17mm*8.5mmPackage Content:1x Bluetooth 5.0 Audio Transmitter and Receiver1x 3.5mm Aux Cable1x User Manual Key Description:"+": Long pre is to switch to the next song; short pre is volume +"-": Long pre is to switch the previous song; short pre is the volume-"M": Switch mode/pause/play/answer callNote: The button can only be used in receiving mode Mode switching:Long pre the M button to switch:red light on means switching to Transmit modeblue light on means switching to receiving mode Transmitter mode use for computer:When you use it on your computer. No need audio cable and no driver required, plug and play (only audio can't transmit data).How to use: Switch to the transmitting mode (TX), the red light flashes, and the Bluetooth speaker or Bluetooth headset is turned on at the same time, it will be automatically paired. After the pairing is succeful, the red light will be on. Transmitter mode for game consoles:Use on Switch, ps4, ps4 pro and other game consoles, no audio cable is needed, plug and play. The sound of the game console is directly transmitted to the Bluetooth headset.How to use: First check the RT02 to the usb port of the game console, switch to the transmit mode (TX), the red light flashes, the Bluetooth speaker or Bluetooth headset is turned on at the same time, and it is automatically paired. After the pairing is succeful, the red light will stay on. Note: If the game console does not have a usb interface, you can purchase an adapter for use. Transmitter mode use for other devices:When used on other non-computer devices with audio output, such as a TVHow to use:1. Plug one end of the audio cable into the audio output of the TV and the other end into the audio of the RT02.2. Plug the RT02 into the usb (DC 5V) and confirm that it is in TX mode (red light flash). The RT02 will automatically search for Bluetooth headset or Bluetooth speaker pairing.Receiver mode use for home speakers/ car speakers, etcRT02 can help speakers, wired headsets, car speakers and other devices without Bluetooth function to connect with mobile phones. Supports two output modes: USB and AUX. How to use USB output mode:USB mode does not require the use of 3.5 audio cables. Directly plug into the car USB port or speaker USB port to use. And confirm that it is in RX mode (blue light flashes). Find the pairing name: RT02 in the Bluetooth settings of the phone, click to pair.Note: The usb playback mode can only be used when the car USB port or speaker USB port supports USB audio output. How to use AUX output mode:In AUX mode, you need to connect one end of the 3.5 audio cable to the RT02 audio interface, and the other end to the car's 3.5 audio interface or the speaker's 3.5 audio interface. The RT02 can be plugged into any 5Vusb interface and confirm that it is in RX mode (blue light Flashing). Then it can be used after pairing with the Bluetooth of the mobile phone. HandsfreeIn the receiving mode, after pairing with the mobile phone, if the mobile phone calls, you can answer it through RTO2, built-in high-definition MIC, pre the M key to answer or hang up.