The Google Chromecast Audio is a 1st generation media streamer that allows you to stream music and other audio content wirelessly from your devices. With a sleek black design and Dolby Digital surround sound support, this unit offers various connectivity options including Wi-Fi, Digital Audio Optical TOSLINK, Stereo Audio L/R RCA, and 3.5mm Audio. Powered by a Dual Core processor and running on the Android operating system, the Google Chromecast Audio is a versatile and easy-to-use device for enhancing your home audio experience.