<ul> <li>Support dual stream (TX mode): The transmitter supports connecting two Bluetooth speakers or headphones at the same time (using the same CODEC), and the dual connection can support up to aptX Adaptive</li> <li>No need to install drivers, plug and play</li> <li>Small size, easy to carry and use</li> </ul> <p><strong>Indicator light:</strong></p> <ul> <li>The blue light flashes quickly, searching and pairing the first device; the blue light is always on, the connection to the Bluetooth device is successful</li> <li>The green light flashes quickly, searching and pairing the second device; the green light is always on, the two Bluetooth devices are successfully connected</li> </ul> <p><strong>Function operation:</strong></p> <ul> <li>1. Turn on the Bluetooth headset and set it to pairing mode</li> <li>2. Insert the device into the power adapter or the USB of the PC host, double-click the pairing button, the blue LED light flashes rapidly, and the device enters the pairing state</li> <li>3. The blue indicator light on the device is always on, and the connection is successful(After connecting one device, the blue indicator is always on. Double-click the button, the green indicator flashes quickly and automatically searches for and connects to the second device. After the second device is successfully connected, the green indicator is always on.)</li> </ul> <p><strong>Specification:</strong></p> <ul> <li>Bluetooth version: Bluetooth V5.3</li> <li>Supported protocols: A2DP, AVRCP, AFH, HFP, HSP</li> <li>Working frequency band: 2.402GHz -2.480GHz</li> <li>Power class: Power class 2 (Class II)</li> <li>Input interface: USB (free drive), AUX audio</li> <li>Power supply mode: USB 5V power supply</li> <li>Input voltage: DC 5V</li> <li>Bluetooth distance: &gt;10M (without blocking and interference)</li> <li>CODEC: aptX Adaptive/aptX HD/aptX LL/aptX/SBC</li> <li>Compatible system: Windows XP/7/8/10, for Linux, for PS4/for NS, Android</li> <li>On/Off: Automatically turn on after connecting the power adapter or computer USB power supply, and automatically turn off after unplugging</li> <li>Button: Click to connect back, double-click to quickly enter the pairing state</li> <li>Size: 8.2*3*1.4cm</li> </ul> <p><strong><span>Note:</span></strong></p> <ul> <li><span>For APTX use: aptX Adaptive CODEC is preferentially supported in single connection (the connected device must also support aptX Adaptive).</span></li> </ul>