The Logitech Squeezebox Duet is a 8th generation network music system that allows you to stream your favorite music using WiFi connectivity. With a sleek black design and an LCD remote control, this device is easy to use and visually appealing. It supports AAC media format and offers various audio/video outputs including digital audio optical TOSLINK, stereo audio L/R RCA, digital audio coaxial RCA, and component RCA. The Logitech Squeezebox Duet is lightweight at 3lbs and operates on a single core processor. Additionally, it is firmware upgradeable and compatible with Microsoft Windows 10 for seamless operation. Tested and working. In nice used condition with some general signs of wear and use. See photos for details .