A 4K TV is a television that has a resolution of 3840 x 2160 pixels, which is four times the resolution of standard 1080p HD TVs. This higher pixel count allows for sharper images and more detail, making it ideal for large screens and close viewing distances. 4K TVs often support various technologies, such as High Dynamic Range (HDR), which enhances color and contrast. Many streaming services, like Netflix and Amazon Prime Video, offer content in 4K, providing viewers with a more immersive experience. Additionally, 4K TVs are becoming more affordable, making them accessible to a wider audience.