4K UHD, or 4K Ultra High Definition, refers to a display resolution of approximately 3840 x 2160 pixels. This resolution is four times that of Full HD, which has a resolution of 1920 x 1080 pixels. The increased pixel count allows for sharper images and more detail, making it ideal for large screens and immersive viewing experiences. In addition to improved resolution, 4K UHD often supports enhanced color depth and dynamic range, providing more vibrant and realistic visuals. Many modern devices, including televisions, monitors, and streaming services, now offer 4K content, making it increasingly accessible to consumers.