4K ULED: Take your picture from great to incredible. The picture quality of the U6GR is driven by our exclusive ULED technologies, which drive the PQ enhancing algorithms that boost color, contrast, brightness, and motion. All are calibrated to work together in perfect harmony – to upgrade the performance of every pixel and create a picture that transforms your favorite entertainment into your Ultra-new reality. Quantum Dot Wide Color Gamut: The introduction of Quantum Dot technologies opened some eyes. We’ve unlocked the power of over a billion color combinations perfectly expressed. It’s easier to feel connected to what’s real while still enjoying the incredible with the U6GR Series. Dolby Vision Dolby Atmos: The fusion of Dolby Vision HDR** picture and Dolby Atmos sound transforms your TV into an entertainment powerhouse. These image and sound technologies from cinema, now brought together in the home, provide amazing realism that you'll see, hear, and feel like never before. Smart OS - Roku TV: Hisense Roku TV makes it easy to watch what you love with all your favorite entertainment in one place. Access your cable, satellite service, and HDTV antenna, or start streaming live and on-demand TV from thousands of channels. Easily discover and enjoy in-season shows, live news, movies, kids’ entertainment, and more for free. Enjoy features like cross-channel search, compatibility with popular voice assistants, and automatic software updates, plus voice control and private listening on the free Roku mobile app. Peak Brightness/Full Array Local Dimming Zones: With higher peak brightness, overall picture quality can be brighter - which is great for well-lit rooms - and high dynamic range content is sharper with better highlights and details. In the U6GR Quantum, up to 600-nits peak brightness across up to 60 local dimming zones ensures a superior HDR experience. Game Mode: Game Mode is a collection of the latest and most advanced gaming technologies available in televisions today. HDMI 2.1 inputs recognize gaming sequences and automatically optimizes display settings for a top-notch experience. The Automatic Low-Latency Mode (ALLM) and Variable Refresh Rate (VRR) deliver smooth, fluid game play by minimizing input lag and screen jitter. This feature brings players instant response times and minimal motion blur and halo effects. Voice Remote: Voice Remote copy: "Power up your TV, adjust the volume, and control your Roku device with one remote. Use your voice to quickly search, play entertainment, and more.