The UGREEN CM144 is a versatile 2-in-1 Bluetooth audio adapter that functions as both a transmitter and a receiver, allowing you to add wireless connectivity to your existing home audio setup. By utilizing Bluetooth v5.0 and Qualcomm aptX LL and aptX HD codecs, it ensures high-quality sound transmission with minimal lag, which is particularly useful when watching movies or gaming on a TV. You can connect the device via a 3.5mm AUX jack or SPDIF optical port, and it even supports pairing two pairs of headphones at once so you can share your audio with someone else. This compact black device is powered by a 200 mAh battery that provides up to 15 hours of use in transmitter mode and 12 hours in receiver mode, requiring about 3 hours for a full recharge via the microUSB port. It operates within a wireless range of 10 meters, making it a practical choice for those who want to move around the room without losing connection. The package includes all necessary cables—micro USB, SPDIF, 3.5mm AUX, and a 3.5mm to 2RCA adapter—ensuring compatibility with a wide range of hardware including PCs, laptops, smartphones, and older home stereo systems.