The Google Chromecast with Google TV 4K UHD Media Streamer in Snow 221428 is a white dongle that offers high-definition audio and video playback, with support for HDR10, HDR10+, and Dolby Vision formats. It features built-in Bluetooth and Wi-Fi connectivity, as well as various audio and video output options including HDMI and USB ports. The device also includes surround sound formats like Dolby Digital Plus and Dolby Atmos, and runs on the Apple TV Software operating system. Its compact and portable design, along with its voice-controlled features, makes it a convenient and versatile media streaming device for your home entertainment needs.