Ultra High Definition (UHD) also known as 4K (3840?2160 pixels) is the next generation of high definition television offering resolutions that is four times greater than current HDTV available today. Video is sharper and much more detailed thanks to greater pixel counts. Images are crisp and clean and seem to pop off the screen. UHD is the perfect solution for applications requiring the use of detailed images. Stream movies music and more from the embedded apps found on Westinghouse Smart TVs. Plus the built-in Wi-Fi connects to your wireless home network. Take control of your Smart TV by downloading a Westinghouse Remote directly to your apple or android based smart phone or mobile device.