A 4K projector is a type of video projector that displays images with a resolution of 3840 x 2160 pixels, which is four times the resolution of 1080p projectors. This higher resolution provides sharper and more detailed images, making it ideal for home theaters, presentations, and large-screen displays. These projectors use advanced technology to enhance color accuracy and brightness, ensuring a vibrant viewing experience. Many 4K projectors support various content sources, including Blu-ray players, streaming devices, and gaming consoles, allowing users to enjoy high-quality visuals across different media formats.