The Roku Streaming Stick 4K - 3820R is a high-definition media streamer designed for televisions. It features a quad-core processor and 4K UHD video output resolution, providing stunning visuals. The device also supports HDR and Dolby Vision for enhanced color and contrast. With Voice Remote control, users can easily navigate and stream their favorite content. The Roku Streaming Stick 4K is a great addition to any home entertainment setup, offering a seamless viewing experience with its Dolby Digital surround sound and compatibility with internet services like Hulu.