Product specificationsModel: BT600Technology: BT5.0, AVRCP (receiver mode only), A2DPOperating range: up to 10 m / 33 ft (no barrier)Pairing name (receiving mode): BT600nsmitter mode: red LED light is onReceiver mode: blue LED light is onProduct size: 32MM*17MM*10MMWeight (bare metal fittings): 15gPackage Contents1X Bluetooth 5.0 Audio nsmitter / Receiver Adapter1X3.5mm double head audio cable1X Chinese and English manualFeatures1. This portable and lightweight wirele audio nsmitter and receiver is the ideal wirele audio Bluetooth nsmiion solution for every situation and use.2. nsmitter mode: Wirelely nsmits audio from a non-Bluetooth TV, home stereo system or CD player to a Bluetooth headset or speaker.3. Receiver mode: Wirelely nsfer audio from a Bluetooth-enabled phone, tablet or computer to cable stereo, speakers or headphones.4. This product is compatible with most Bluetooth protocol products on the market, with low output delay and stable performance. Widely used in computer / laptop / tablet / home stereo system / headset / smart phone / MP3 player and CD player and so on.Instructions1. Mode switching:A. First plug the product into the USB interface of the 5V output voltage.B. The default working mode of the machine is the nsmitter mode after power-on.C. Pre and hold the side on of the product for more than 3 seconds to switch to the receiver mode, and then pre and hold to switch back to the nsmitter mode.2. Pairing and operation methodsA. Receiver mode: The blue LED fes to indicate that it has switched to receive mode. The USB of this product is used for power supply, and can be plued into any USB interface with 5V output, such as mobile phone charger, mobile power supply and so on. Find the pairing name of the BT600 in the Bluetooth settings of your phone. The blue LED is always on after the pairing is succeful. Play audio files in your phone, use 3.5mm audio cable to connect to speakers, car audio Aux port and ordinary headphones and other Bluetooth-free devices.B. nsmitter mode: A red LED fes to indicate that it has switched to nsmitter mode. The USB of the product is used for power supply and can be plued into any USB interface with 5V output. In the launch mode, the product will automatically search for other Bluetooth receiving devices that have been turned on (such as Bluetooth headset, Bluetooth speaker, Bluetooth receiver, etc.). Use a 3.5mm audio cable to connect to a device with audio output such as a TV or computer. At this time, the sound output by the device is wirelely nsmitted through the product to a receiving device such as a Bluetooth speaker or a Bluetooth headset.